VC 摄像头驱动程序 基于vfw

/********************************************************************\ * CapPicture.c: Source code for generic * * * * Comments: Video capture and display with some processing * * * * Functions: * * WinMain - Application entry point * * MainWndProc - main window procedure * * * * * \********************************************************************/ /********************* Header Files *********************/ #include <windows.h> // windows GUI and services #include <vfw.h> // video for windows library #include <commdlg.h> // common dialogs #include "CapPicture.h" // resource header /********************* Prototypes ***********************/ // main window procedure LRESULT WINAPI MainWndProc( HWND, UINT, WPARAM, LPARAM ); // Select Capture Driver Procedure LRESULT WINAPI SelCapDrvProc( HWND, UINT, WPARAM, LPARAM ); // Enumerate Capture Drivers int EnumCapDrv(); // Create the buttons on the main window //int CreateWndButtons(); this doesnt work // handle the right click popup menu VOID APIENTRY HandlePopupMenu(HWND, POINT); // video thread procedure DWORD WINAPI videoThreadProc(LPVOID lParam); /******************* Global Variables ********************/ HANDLE ghInstance; // application instance HWND hwndMain; // main window handle HWND hwndVideo; // video capture window HWND hwndSelCapDrvDlg; // Select the capture driver dialog HWND hwndSelCapDrvDlg_LBox; // list box for select capture driver dialog HWND hwndExit; // exit button HWND hwndMin; // minimize button HWND hwndHelp; // help button HWND hwndRecord; // record button HANDLE hVideoThread; // thread to stop the hang when recording video HRGN hRegion1; // region for window shaping CAPDRIVERCAPS CapDrvCaps; // driver capabilities bool isRecordFileOpen = false; // flag set if record file is open char recordFile[260]; // file to hold recording bool isPicFileOpen = false; // flag set if snapshot file is open char pictureFile[260]; // file to hold snapshot bool isRecording = false; // are we recording? bool threadEnd = false; // should the video thread end? /********************************************************************\ * * * CLASSES, ENUMS, & STRUCTS * * * /********************************************************************/ /********************************************************************\ * Function: int PASCAL WinMain(HINSTANCE, HINSTANCE, LPSTR, int) * * * * Purpose: Initializes Application * * * * Comments: Register window class, create and display the main * * window, and enter message loop. * * * * * \********************************************************************/ int PASCAL WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow ) { WNDCLASS wc; MSG msg; if( !hPrevInstance ) { wc.lpszClassName = "GenericAppClass"; wc.lpfnWndProc = MainWndProc; wc.style = CS_OWNDC | CS_VREDRAW | CS_HREDRAW; wc.hInstance = hInstance; wc.hIcon = LoadIcon( NULL, IDI_APPLICATION ); wc.hCursor = LoadCursor( NULL, IDC_ARROW ); wc.hbrBackground = CreateSolidBrush (RGB(0, 64, 128)); wc.lpszMenuName = "GenericAppMenu"; wc.cbClsExtra = 0; wc.cbWndExtra = 0; RegisterClass( &wc ); } ghInstance = hInstance; hwndMain = CreateWindow( "GenericAppClass", "Super Video", WS_POPUP, 0, 0, 500, 500, NULL, NULL, hInstance, NULL ); ShowWindow( hwndMain, nCmdShow ); //Set the main window to the region SetWindowRgn(hwndMain,hRegion1,1); while( GetMessage( &msg, NULL, 0, 0 ) ) { TranslateMessage( &msg ); DispatchMessage( &msg ); } return msg.wParam; } /********************************************************************\ * Function: LRESULT CALLBACK MainWndProc(HWND, UINT, WPARAM, LPARAM) * * * * Purpose: Processes Application Messages * * * * Comments: The following messages are processed * * * * WM_PAINT * * WM_CREATE * * WM_DESTROY * * * * * \********************************************************************/ LRESULT CALLBACK MainWndProc( HWND hwndMain, UINT msg, WPARAM wParam, LPARAM lParam ) { HDC hDC = GetDC(hwndMain); RECT rc; // client area POINT pt; // location of mouse click switch( msg ) { /**************************************************************\ * WM_LBUTTONDBLCLK: * \**************************************************************/ case WM_LBUTTONDBLCLK: SetFocus(hwndMain); break; /**************************************************************\ * WM_LBUTTONDOWN: * \**************************************************************/ case WM_RBUTTONDOWN: // Get the bounding rectangle of the client area. GetClientRect(hwndMain, (LPRECT) &rc); // Get the client coordinates for the mouse click. pt.x = LOWORD(lParam); pt.y = HIWORD(lParam); // If the mouse click took place inside the client // area, execute the application-defined function // that displays the shortcut menu. if (PtInRect((LPRECT) &rc, pt)) HandlePopupMenu(hwndMain, pt); break; /**************************************************************\ * WM_PAINT: * \**************************************************************/ case WM_PAINT: //Give the region a red border FrameRgn(hDC,hRegion1,CreateSolidBrush(RGB(0,0,0)),2,2); // brung our dialog to the foreground BringWindowToTop(hwndSelCapDrvDlg); return( DefWindowProc( hwndMain, msg, wParam, lParam )); /**************************************************************\ * WM_COMMAND: * \**************************************************************/ case WM_COMMAND: CAPSTATUS CapStatus; switch( wParam ) { case SOURCE: if(CapDrvCaps.fHasDlgVideoSource) capDlgVideoSource(hwndVideo); break; case FORMAT://why doesnt this work //if(CapDrvCaps.fHasDlgVideoFormat) //{ capDlgVideoFormat(hwndMain); // Are there new image dim