Thanks!

Does some of you could tell me what's the function of the codes below: Thanks! void DisplayShape(bool Light) { HPEN hNPen,hOPen; HBRUSH hOldBrush,hNewBrush; COLORREF cfill; if (Light) { if (cluminance == 3) return; cluminance = 3; cfill=RGB(0,255,0); } else switch(cluminance) { case 3: {cluminance--; cfill=RGB(64,255,64); break;} case 2: {cluminance--; cfill=RGB(128,255,128); break;} case 1: {cluminance--; cfill=RGB(192,255,192); break;} default: cfill=RGB(255,255,255); } hdc = GetDC(hWndG); hNPen=CreatePen(PS_SOLID,1,RGB(0,0,0)); hOPen=(HPEN)SelectObject(hdc,hNPen); hNewBrush=CreateSolidBrush(cfill); hOldBrush=(HBRUSH)SelectObject(hdc,hNewBrush); Ellipse(hdc,393,235,443,285); DeleteObject(SelectObject(hdc,hOPen)); DeleteObject(SelectObject(hdc,hOldBrush)); ReleaseDC(hWndG,hdc); }

Hi, The codes below used to create a window to display something. Could some of you tell me that how can I display the real time clock (H:M:S) inside this window... Thanks! hwnd = CreateWindow( szWinName, /* name of window class */ "Capture Testing", /* title */ WS_OVERLAPPEDWINDOW, /* window style - normal */ CW_USEDEFAULT, /* X coordinate - let Windows decide */ CW_USEDEFAULT, /* Y coordinate - let Windows decide */ 480, /* width - let Windows decide */ 320, /* height - let Windows decide */ HWND_DESKTOP, /* no parent window */ NULL, /* no menu */ hThisInst, /* handle of this instance of the program */ NULL /* no additional arguments */ ); g_inst=hThisInst; /* Display the window. */ ShowWindow(hwnd, nWinMode); UpdateWindow(hwnd); hWndG=hwnd; SetTimer(hWndG,1,100,NULL);

Thanks!

RtlCopyMemory (ddcamVideoData, lpVHdr->lpData , lpVHdr->dwBufferLength ); ^ ^ ^ ^ could some of you tell me that what's the function of the arrow?? Thanks alot!

Hi, Could some of you tell me what's the function of the syntax below: Thanks alot! LRESULT CALLBACK WindowFunc(HWND, UINT, WPARAM, LPARAM); LRESULT CALLBACK onCAPErrorCallback(HWND WhatWindow, int ErrorID, LPSTR ErrorMessage); LRESULT CALLBACK OnVideoStreamCallback(HWND hWnd, LPVIDEOHDR lpVHdr); LRESULT CALLBACK detectionFunc(HWND , UINT , WPARAM , LPARAM );

Thanks!

Hi, The codes below are used to create button and activate some function, when I compile it, it shows some error message as below. could some of you tell me how to solve it! Thanks! RunButton ( HWND hwnd ) { CreateWindow( "BUTTON", "Run", WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, // styles 380, 40, 60, 25, hwnd, NULL, (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE), NULL); return 1; } . . . case WM_COMMAND: switch HIWORD(wParam) { case BN_CLICKED: switch (lParam) { case RunButton: <--- error C2051: case expression not constant CetCapConnect( hwnd ); break; } <--- warning C4060: switch statement contains no 'case' or 'default' labels break;

Hi, Below is the part code, which used to display the frame from camera, my problem is that, can I create some button instead of by press "1"? Thanks! void CetCapConnect(HWND hwnd) { //CAPDRIVERCAPS CapDrvCaps; // structure of the capabilities of the capture driver if (!hWndC) hWndC = capCreateCaptureWindow ( // Create a child capture window LPSTR) "My Capture Window", // window name if pop-up WS_CHILD | WS_VISIBLE, // window style 0, 0, 160, 120, // window position and size (HWND) hwnd, // handle of parent window (int) 0 /* child ID */ ); LRESULT CALLBACK WindowFunc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { HDC hdc; // handle of device context switch(message) { case WM_CHAR: /* process keystroke */ hdc = GetDC(hwnd); /* get device context */ switch (wParam) { case 49: // pressed "1" to get connect CetCapConnect( hwnd ); break;

Thanks!

Hi, I'm new to Visual C++! Could some of you tell me what is the function of int WINAPI WinMain(HINSTANCE hThisInst, HINSTANCE hPrevInst, LPSTR lpszArgs, int nWinMode) Thanks!

This macro fills the frame buffer with a single uncompressed frame from the capture device. The above discription found in MSDN library, do you know what is the format of the uncompressed frame? is it bitmap??? Thanks alot!

Hi, could you tell me does vc++ can send email, if yes, how?? Thanks!

could some of you tell me how to put the frames into memory buffer for comparison.....

Thanks for your reply! another question, how can I store the frame to buffer from the USB camera, and how to compare two frames if they are different? Thanks alot!

Thank you for your reply, could you give me some idea on it? I have no idea.. :(

Could some of you tell me how to get the RGB value of a pixel from a frame which captured from USB camera.