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// |
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// Copyright (C) 2004-2005 Martin Wickett |
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// |
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|
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#include "hookdll.h" |
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#include <windows.h> |
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#include <winuser.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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|
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#include "wtsapi32.h" |
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#include "Cchannel.h" |
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|
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#define DLL_EXPORT extern "C" __declspec(dllexport) |
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|
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// Shared DATA |
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#pragma data_seg ( "SHAREDDATA" ) |
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|
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// this is the total number of processes this dll is currently attached to |
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int iInstanceCount = 0; |
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HWND hWnd = 0; |
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|
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#pragma data_seg () |
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|
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#pragma comment(linker, "/section:SHAREDDATA,rws") |
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|
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#define snprintf _snprintf |
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|
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HHOOK hCbtProc = 0; |
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HHOOK hShellProc = 0; |
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HHOOK hWndProc = 0; |
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HINSTANCE hInst = 0; |
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HANDLE m_vcHandle = 0; |
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|
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|
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void SendDebug( char *format, ... ) |
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{ |
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va_list argp; |
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char buf [ 256 ]; |
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|
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va_start( argp, format ); |
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vsprintf( buf, format, argp ); |
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va_end( argp ); |
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|
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WriteToChannel( "DEBUG1," ); |
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WriteToChannel( buf ); |
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WriteToChannel( "\n" ); |
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} |
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|
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|
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|
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BOOL APIENTRY DllMain( HINSTANCE hinstDLL, DWORD ul_reason_for_call, LPVOID lpReserved ) |
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{ |
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switch ( ul_reason_for_call ) { |
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case DLL_PROCESS_ATTACH: { |
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// remember our instance handle |
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hInst = hinstDLL; |
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++iInstanceCount; |
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OpenVirtualChannel(); |
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break; |
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} |
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|
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case DLL_THREAD_ATTACH: |
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break; |
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case DLL_THREAD_DETACH: |
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break; |
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case DLL_PROCESS_DETACH: { |
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--iInstanceCount; |
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CloseVirtualChannel(); |
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} |
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break; |
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} |
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|
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return TRUE; |
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} |
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|
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LRESULT CALLBACK CallWndProc( int nCode, WPARAM wParam, LPARAM lParam ) |
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{ |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hWndProc, nCode, wParam, lParam ); |
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} |
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|
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char windowTitle[ 150 ] = { "" |
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}; |
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HWND windowHandle = NULL; |
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HWND windowHandle2 = NULL; |
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char result[ 255 ] = { "" |
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}; |
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CWPSTRUCT *details = ( CWPSTRUCT * ) lParam; |
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CREATESTRUCT *cs = ( CREATESTRUCT * ) details->lParam; |
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LONG dwStyle = GetWindowLong( details->hwnd, GWL_STYLE ); |
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WINDOWPOS *wp = ( WINDOWPOS * ) details->lParam; |
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RECT rect; |
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|
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switch ( details->message ) { |
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|
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case WM_WINDOWPOSCHANGED: |
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if ( !( dwStyle & WS_DLGFRAME ) ) |
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break; |
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|
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if ( wp->flags & SWP_NOMOVE && wp->flags & SWP_NOSIZE ) |
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break; |
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|
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if ( !GetWindowRect( details->hwnd, &rect ) ) { |
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SendDebug( "GetWindowRect failed!\n" ); |
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break; |
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} |
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|
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snprintf( result, sizeof( result ), |
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"POSITION1,0x%p,%d,%d,%d,%d,0x%x\n", |
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details->hwnd, |
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rect.left, rect.top, |
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rect.right - rect.left, |
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rect.bottom - rect.top, |
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0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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WriteToChannel( result ); |
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|
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break; |
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|
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|
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/* Note: WM_WINDOWPOSCHANGING/WM_WINDOWPOSCHANGED are |
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strange. Sometimes, for example when bringing up the |
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Notepad About dialog, only an WM_WINDOWPOSCHANGING is |
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sent. In some other cases, for exmaple when opening |
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Format->Text in Notepad, both events are sent. Also, for |
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some reason, when closing the Notepad About dialog, an |
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WM_WINDOWPOSCHANGING event is sent which looks just like |
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the event that was sent when the About dialog was opened... */ |
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case WM_WINDOWPOSCHANGING: |
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if ( !( dwStyle & WS_DLGFRAME ) ) |
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break; |
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|
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if ( !( wp->flags & SWP_NOZORDER ) ) { |
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snprintf( result, sizeof( result ), |
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"ZCHANGE1,0x%p,0x%p,0x%x\n", |
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details->hwnd, |
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wp->flags & SWP_NOACTIVATE ? wp->hwndInsertAfter : 0, |
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0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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WriteToChannel( result ); |
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} |
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break; |
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|
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|
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case WM_CREATE: |
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if ( cs->style & WS_DLGFRAME ) { |
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|
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if ( cs->cx < 0 || cs->cy < 0 ) |
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break; |
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|
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snprintf( result, sizeof( result ), |
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"CREATE1,0x%p,0x%x\n", |
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details->hwnd, 0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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WriteToChannel( result ); |
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|
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snprintf( result, sizeof( result ), |
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"SETSTATE1,0x%p,%s,0x%x,0x%x\n", |
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details->hwnd, |
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cs->lpszName, |
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1, // FIXME: Check for WS_MAXIMIZE/WS_MINIMIZE |
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0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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WriteToChannel( result ); |
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|
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snprintf( result, sizeof( result ), |
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"POSITION1,0x%p,%d,%d,%d,%d,0x%x\n", |
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details->hwnd, |
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cs->x, |
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cs->y, |
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cs->cx, |
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cs->cy, |
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0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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WriteToChannel( result ); |
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|
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} |
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break; |
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|
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|
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case WM_DESTROY: |
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if ( dwStyle & WS_DLGFRAME ) { |
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snprintf( result, sizeof( result ), |
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"DESTROY1,0x%p,0x%x\n", |
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details->hwnd, 0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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WriteToChannel( result ); |
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} |
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|
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break; |
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|
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|
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default: |
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break; |
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} |
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|
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return CallNextHookEx( hWndProc, nCode, wParam, lParam ); |
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} |
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|
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LRESULT CALLBACK CbtProc( int nCode, WPARAM wParam, LPARAM lParam ) |
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{ |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hCbtProc, nCode, wParam, lParam ); |
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} |
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|
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char windowTitle[ 150 ] = { "" |
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}; |
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HWND windowHandle = NULL; |
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char result[ 255 ] = { "" |
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}; |
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switch ( nCode ) { |
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case HCBT_MINMAX: |
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|
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if ( ( LOWORD( lParam ) == SW_SHOWMINIMIZED ) |
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|| ( LOWORD( lParam ) == SW_MINIMIZE ) ) { |
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MessageBox( 0, "Minimizing windows is not allowed in this version. Sorry!", "SeamlessRDP", MB_OK ); |
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return 1; |
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} |
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|
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GetWindowText( ( HWND ) wParam, windowTitle, 150 ); |
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|
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snprintf( result, sizeof( result ), |
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"SETSTATE1,0x%p,%s,0x%x,0x%x\n", |
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( HWND ) wParam, |
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windowTitle, |
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LOWORD( lParam ), |
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0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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WriteToChannel( result ); |
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break; |
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|
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|
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default: |
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break; |
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} |
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|
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|
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|
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return CallNextHookEx( hCbtProc, nCode, wParam, lParam ); |
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} |
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|
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|
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LRESULT CALLBACK ShellProc( int nCode, WPARAM wParam, LPARAM lParam ) |
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{ |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hShellProc, nCode, wParam, lParam ); |
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} |
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|
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char windowTitle[ 150 ] = { "" |
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}; |
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HWND windowHandle = NULL; |
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char result[ 255 ] = { "" |
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}; |
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char strWindowId[ 25 ]; |
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LONG b, t, l, r; |
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char strW[ 5 ]; |
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char strY[ 5 ]; |
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char strX[ 5 ]; |
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char strH[ 5 ]; |
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RECT rect; |
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|
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switch ( nCode ) { |
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case HSHELL_WINDOWCREATED: |
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|
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//get window id |
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windowHandle = ( HWND ) wParam; |
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itoa( ( int ) windowHandle, strWindowId, 10 ); |
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|
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//get coords |
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GetWindowRect( windowHandle, &rect ); |
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b = rect.bottom; |
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t = rect.top; |
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l = rect.left; |
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r = rect.right; |
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ltoa( b - t, strH, 10 ); |
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ltoa( t, strY, 10 ); |
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ltoa( r - l, strW, 10 ); |
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ltoa( l, strX, 10 ); |
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|
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//get name |
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GetWindowText( windowHandle, windowTitle, 150 ); |
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|
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////setup return string |
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strcat( result, "MSG=HSHELL_WINDOWCREATED;OP=0;" ); |
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strcat( result, "ID=" ); |
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strcat( result, strWindowId ); |
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strcat( result, ";" ); |
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strcat( result, "TITLE=" ); |
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strcat( result, windowTitle ); |
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strcat( result, ";" ); |
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strcat( result, "X=" ); |
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strcat( result, strX ); |
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strcat( result, ";" ); |
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strcat( result, "Y=" ); |
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strcat( result, strY ); |
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strcat( result, ";" ); |
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strcat( result, "H=" ); |
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strcat( result, strH ); |
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strcat( result, ";" ); |
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strcat( result, "W=" ); |
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strcat( result, strW ); |
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strcat( result, "." ); |
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WriteToChannel( result ); |
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break; |
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|
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case HSHELL_WINDOWDESTROYED: |
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|
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//get window id |
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windowHandle = ( HWND ) wParam; |
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itoa( ( int ) windowHandle, strWindowId, 10 ); |
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|
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//get coords |
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GetWindowRect( windowHandle, &rect ); |
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b = rect.bottom; |
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t = rect.top; |
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l = rect.left; |
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r = rect.right; |
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ltoa( b - t, strH, 10 ); |
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ltoa( t, strY, 10 ); |
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ltoa( r - l, strW, 10 ); |
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ltoa( l, strX, 10 ); |
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|
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//get name |
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GetWindowText( windowHandle, windowTitle, 150 ); |
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|
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////setup return string |
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strcat( result, "MSG=HSHELL_WINDOWDESTROYED;OP=1;" ); |
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strcat( result, "ID=" ); |
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strcat( result, strWindowId ); |
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strcat( result, ";" ); |
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strcat( result, "TITLE=" ); |
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strcat( result, windowTitle ); |
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strcat( result, ";" ); |
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strcat( result, "X=" ); |
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strcat( result, strX ); |
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strcat( result, ";" ); |
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strcat( result, "Y=" ); |
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strcat( result, strY ); |
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strcat( result, ";" ); |
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strcat( result, "H=" ); |
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strcat( result, strH ); |
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strcat( result, ";" ); |
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strcat( result, "W=" ); |
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strcat( result, strW ); |
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strcat( result, "." ); |
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WriteToChannel( result ); |
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break; |
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|
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|
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default: |
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break; |
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} |
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|
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|
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return CallNextHookEx( hShellProc, nCode, wParam, lParam ); |
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} |
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|
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DLL_EXPORT void SetHooks( void ) |
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{ |
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if ( !hCbtProc ) { |
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hCbtProc = SetWindowsHookEx( WH_CBT, ( HOOKPROC ) CbtProc, hInst, ( DWORD ) NULL ); |
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} |
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|
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#if 0 |
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if ( !hShellProc ) { |
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hShellProc = SetWindowsHookEx( WH_SHELL, ( HOOKPROC ) ShellProc, hInst, ( DWORD ) NULL ); |
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} |
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#endif |
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|
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if ( !hWndProc ) { |
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hWndProc = SetWindowsHookEx( WH_CALLWNDPROC, ( HOOKPROC ) CallWndProc, hInst, ( DWORD ) NULL ); |
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} |
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} |
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|
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DLL_EXPORT void RemoveHooks( void ) |
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{ |
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if ( hCbtProc ) { |
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UnhookWindowsHookEx( hCbtProc ); |
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} |
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|
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if ( hShellProc ) { |
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UnhookWindowsHookEx( hShellProc ); |
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} |
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|
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if ( hWndProc ) { |
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UnhookWindowsHookEx( hWndProc ); |
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} |
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} |
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|
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DLL_EXPORT int GetInstanceCount() |
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{ |
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return iInstanceCount; |
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} |
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|
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int OpenVirtualChannel() |
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{ |
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m_vcHandle = WTSVirtualChannelOpen( WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, CHANNELNAME ); |
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|
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if ( m_vcHandle == NULL ) { |
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return 0; |
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} else { |
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return 1; |
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} |
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} |
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|
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int CloseVirtualChannel() |
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{ |
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BOOL result = WTSVirtualChannelClose( m_vcHandle ); |
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|
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m_vcHandle = NULL; |
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|
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if ( result ) { |
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return 1; |
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} else { |
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return 0; |
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} |
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} |
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|
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int ChannelIsOpen() |
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{ |
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if ( m_vcHandle == NULL ) { |
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return 0; |
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} else { |
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return 1; |
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} |
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} |
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|
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int WriteToChannel( PCHAR buffer ) |
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{ |
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PULONG bytesRead = 0; |
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PULONG pBytesWritten = 0; |
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|
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if ( !ChannelIsOpen() ) |
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return 1; |
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|
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BOOL result = WTSVirtualChannelWrite( m_vcHandle, buffer, ( ULONG ) strlen( buffer ), pBytesWritten ); |
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|
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if ( result ) { |
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return 1; |
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} else { |
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return 0; |
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} |
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} |
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