What lib paths do I need ? I don't know. can you tell me ?

When Link Errors occur again ! Do you know why ? alb2CaptureProxyPluginPage.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE StdAfx.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE OptionTree.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE alb2CaptureOptionTree.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE alb2CaptureProxyPlugin.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE alb2CaptureProxyPluginDll.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE alb2CaptureProxyPluginIFace.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE alb2CaptureOptionTree.obj : error LNK2001: unresolved external symbol "protected: virtual int __thiscall CWnd::SetOccDialogInfo(struct _AFX_OCC_DIALOG_INFO *)" (?SetOccDialogInfo@CWnd@@MAEHPAU_AFX_OCC_DIALOG_INFO@@@Z) OptionTree.obj : error LNK2001: unresolved external symbol "protected: virtual int __thiscall CWnd::SetOccDialogInfo(struct _AFX_OCC_DIALOG_INFO *)" (?SetOccDialogInfo@CWnd@@MAEHPAU_AFX_OCC_DIALOG_INFO@@@Z) alb2CaptureOptionTree.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall CWnd::IsFrameWnd(void)const " (?IsFrameWnd@CWnd@@UBEHXZ) OptionTree.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall CWnd::IsFrameWnd(void)const " (?IsFrameWnd@CWnd@@UBEHXZ) alb2CaptureOptionTree.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall CWnd::CheckAutoCenter(void)" (?CheckAutoCenter@CWnd@@UAEHXZ) OptionTree.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall CWnd::CheckAutoCenter(void)" (?CheckAutoCenter@CWnd@@UAEHXZ) alb2CaptureOptionTree.obj : error LNK2001: unresolved external symbol "protected: virtual int __thiscall CWnd::OnChildNotify(unsigned int,unsigned int,long,long *)" (?OnChildNotify@CWnd@@MAEHIIJPAJ@Z) OptionTree.obj : error LNK2001: unresolved external symbol "protected: virtual int __thiscall

Thanks ! It's right ! But Why?

Code : at .cpp file : IMPLEMENT_DYNAMIC(alb2CaptureOptionTree , COptionTree) //two .h file class COptionTree : public CWnd { .................... } class alb2CaptureOptionTree : public COptionTree { DECLARE_DYNAMIC(alb2CaptureOptionTree) .......... } Error : when compiling the code , Errors occur . error C2039: 'classCOptionTree' : is not a member of 'COptionTree' error C2065: 'classCOptionTree' : undeclared identifier In fact , I never define a class named classCOptionTree. Why ? What's the reason? Thank you ! Fly as a bird

How to save the bmp file? the data is YUYV format. Give me a sample ,thanks ! could I first convert the data from YUV format to RGB format? .

I want to understand the knowledge of Encode amd Decode, could you give me some? Thanks !

Sorry,What I want to say is that: A bitmap named "picture1" is stored at display memory and is displayed at the display.When I capture the screen ,and the bitmap received didn't contain picture1 ,why? if I want to capture the picture1,how? Thanks

Could I get the bitmaps stored at display memory by capturing the screen ? if not ,why?

I want to use the follow codes to capture screen ,but I get a black screen. Please help me to find the errors! thanks! HWND hDesktopWnd=::GetDesktopWindow(); HDC hDesktopDC=::GetDC(hDesktopWnd); HDC hDesktopCompatibleDC=CreateCompatibleDC(hDesktopDC); HBITMAP hDesktopCompatibleBitmap=CreateCompatibleBitmap(hDesktopDC,GetSystemMetrics(SM_CXSCREEN),GetSystemMetrics(SM_CYSCREEN)); SelectObject(hDesktopCompatibleDC,hDesktopCompatibleBitmap); BitBlt(hDesktopCompatibleDC,0,0,GetSystemMetrics(SM_CXSCREEN) ,GetSystemMetrics(SM_CYSCREEN) ,hDesktopDC,0,0,SRCCOPY); // InvalidateRect(NULL,false); HDC hBmpFileDC=CreateCompatibleDC(hDesktopCompatibleDC); HBITMAP hBmpFileBitmap=CreateDIBSection(hDesktopCompatibleDC,&bi,DIB_RGB_COLORS,&pBits,NULL,0); SelectObject(hBmpFileDC,hBmpFileBitmap); BitBlt(hBmpFileDC,0,0,width,height,hDesktopCompatibleDC,0,0,SRCCOPY); // the fellow codes is save the bitmap HANDLE hFile=CreateFile((unsigned short *)szFileName,GENERIC_WRITE,FILE_SHARE_WRITE,NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL); bi.bmiHeader.biBitCount=16; // bi.bmiHeader.biClrUsed=0; bi.bmiHeader.biHeight=GetSystemMetrics(SM_CYSCREEN); //GetHeight(); bi.bmiHeader.biWidth=GetSystemMetrics(SM_CXSCREEN); //GetWidth(); bi.bmiHeader.biSize=sizeof(BITMAPINFOHEADER); bi.bmiHeader.biPlanes=1; bi.bmiHeader.biCompression=BI_RGB; // bi.bmiHeader.biXPelsPerMeter=0; // bi.bmiHeader.biYPelsPerMeter=0; // bi.bmiHeader.biClrImportant=0; DWORD bitSize=((bi.bmiHeader.biWidth*16)/8)*bi.bmiHeader.biHeight; bi.bmiHeader.biSizeImage=bitSize; bitHeader.bfType=((WORD)('M'<<8)|'B'); bitHeader.bfReserved1=0; bitHeader.bfReserved2=0; bitHeader.bfOffBits=(DWORD)(sizeof(BITMAPFILEHEADER)+bi.bmiHeader.biSize); bitHeader.bfSize=bi.bmiHeader.biSizeImage+bitHeader.bfOffBits; if(hFile!=INVALID_HANDLE_VALUE) { DWORD dwRet=0; WriteFile(hFile,&bitHeader,sizeof(bitHeader),&dwRet,NULL); WriteFile(hFile,&bi.bmiHeader,sizeof(bi.bmiHeader),&dwRet,NULL); WriteFile(hFile,pBits,bi.bmiHeader.biSizeImage,&dwRet,NULL); CloseHandle(hFile); } DeleteDC(hBmpFileDC); DeleteDC(hDesktopCompatibleDC); ::ReleaseDC(hDesktopWnd,hDesktopDC); DeleteObject(hBmpFileBitmap); DeleteObject(hDesktopCompatibleBitmap);

Hello,I want to capture the screen with GDI functions , could you give me some samples? my computer does not support GetDIBit()function, Thanks

Must I set the g_pVPE->SetTargetSurface() before I called g_pVPE->StartVideo(&ddvpi)

I want to receive the data from a videoport! I create a videoport g_pVPE by DirectDraw! but after I call g_pVPE->startVideo(&ddvpi), hRet==DDERR_INVALIDPARAMS. That is I set some parameters wrong! The setting of parameters are as follows,please help me find the error! thanks! int g_CropTop=0x3; int g_CropLeft=0x1d; #define CAPWIDTH 800//620 #define CAPHEIGHT 600//440 int g_SurfWidth = CAPWIDTH/2;//310; // NOTE: g_SurfHeight has to start from CAPHEIGHT/2, // because of interlace data int g_SurfHeight = CAPHEIGHT/2;//220; DDVIDEOPORTINFO ddvpi; memset(&ddvpi, 0, sizeof(ddvpi)); ddvpi.dwSize = sizeof(ddvpi); ddvpi.lpddpfInputFormat = &InputFormats[0]; ddvpi.dwVPFlags = DDVP_CROP | g_VPFlags| DDVP_PRESCALE; ddvpi.rCrop.left = g_CropLeft; ddvpi.rCrop.right = ddvpi.rCrop.left + CAPWIDTH; ddvpi.rCrop.top = g_CropTop; ddvpi.rCrop.bottom = ddvpi.rCrop.top + CAPHEIGHT/2; ddvpi.dwVBIHeight = ddvpi.rCrop.top; ddvpi.dwPrescaleWidth = g_SurfWidth; ddvpi.dwPrescaleHeight = g_SurfHeight; ddvpi.dwOriginX=0; ddvpi.dwOriginY=0; hRet = g_pVPE->StartVideo(&ddvpi); if(hRet!=DD_OK) {if(hRet==DDERR_INVALIDOBJECT) .................. if(hRet==DDERR_INVALIDOBJECT ) ........................ if(hRet==DDERR_SURFACELOST) .............. }

About DirectDraw................ I want to create a surface to receive the data from a videoport,but the overlay surface is unsupported. Well,What kinds of surface should I create? Please give me some suggestion free like a bird

Sorry!I forget! After calling CreateSurface() hRet=DDERR_NOOVERLAYHW; Is that means display doesn't support overlay surface? Thanks! free like a bird!

Hello everyone, An error occur when I debug the follow codes,please help me tofind the errors,Thanks! DDSURFACEDESC2 ddsd; LPDIRECTDRAWSURFACE4 g_pDDSBack = NULL; //DirectDraw back surface HRESULT hRet; memset(&ddsd, 0, sizeof(ddsd)); ddsd.dwSize = sizeof(ddsd); ddsd.dwFlags= DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT | DDSD_BACKBUFFERCOUNT; ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY | DDSCAPS_VIDEOPORT | DDSCAPS_SYSTEMMEMORY| //DDSCAPS_VIDEOMEMORY | DDSCAPS_FLIP | DDSCAPS_BACKBUFFER | DDSCAPS_COMPLEX| FALSE; ddsd.dwBackBufferCount = 1; ddsd.dwWidth =g_SurfWidth; ddsd.dwHeight =g_SurfHeight*g_Factor; ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC; ddsd.ddpfPixelFormat.dwFourCC=mmioFOURCC ('Y','U','Y','V'); Line1: hRet = g_pDD->CreateSurface(&ddsd, &g_pDDSBack, NULL); Note : g_pDD is a created LPDIRECTDRAW4 vairable Add I have checked the value of g_pDD. It's not zero! g_SurfWidth,g_SurfHeight,g_Factor are all initialzed! but When I excute the program g_pDDSback is zero! why? Is there some errors at the setting of ddsd? free like a bird

go on the former question.......... Should I write the parameter bmiColors of BITMAPINFO? if need,how? And what's type it is? what's regulation should I must obey? Thanks! free like a bird

What's the difference between type RGB and YUV type? free like a bird

Hello everyone! I want capture a picture from a playing file(the file is now playing at my display) it support 16-bit YUYV type. BITMAPINFOHEADER bih; the question is: How to write the parameters of bih? such as bih.biCompression, bih.biXPelsPerMeter, bih.biYPelsPerMeter, bih.biBitCount. Cause I'm a freshman,please explain in detail! Thanks! free like a bird

I want to know the use of parameter nEscape? could you give me a sample, or some information about the mening and use of this parameter? thanks! int ExtEscape( HDC hdc, int nEscape, int cbInput, LPCSTR lpszInData, in cbOutput, LPSTR lpszOutData ); free like a bird!

Hello Recetnly, I use function ExtEscape at my program, but I don't know what should be referred to the parameter nEscape. What value should be referred to the parameter nEscape? Could you discribe this in detail for me? Thanks! int ExtEscape( HDC hdc, int nEscape, int cbInput, LPCSTR lpszInData, in cbOutput, LPSTR lpszOutData ); free like a bird