为什么CreateDIBSection（）与certian BITMAPINFO失败？
我想用
CreateDIBSection
CreateDIBSection
NULL
GetLastError
nMemSize
CreateDIBSection
nScreenWidth = 1024;
nScreenHeight= 768;
= nScreenWidth*nScreenHeight*3*7
HDC hdc = ::GetDC(hWnd);
m_hBmpMapFile = ::CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, nMemSize, NULL);
BITMAPINFO bmpInfo = {0};
bmpInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmpInfo.bmiHeader.biWidth = nScreenWidth;
bmpInfo.bmiHeader.biHeight = nScreenHeight;
bmpInfo.bmiHeader.biPlanes = 1;
bmpInfo.bmiHeader.biBitCount = 24;
bmpInfo.bmiHeader.biCompression = 0;
bmpInfo.bmiHeader.biSizeImage = nMemSize;
bmpInfo.bmiHeader.biXPelsPerMeter = 0;
bmpInfo.bmiHeader.biYPelsPerMeter = 0;
bmpInfo.bmiHeader.biClrUsed = 0;
bmpInfo.bmiHeader.biClrImportant = 0;
bmpInfo.bmiColors[0].rgbBlue = 204;
bmpInfo.bmiColors[0].rgbGreen = 204;
bmpInfo.bmiColors[0].rgbRed = 204;
bmpInfo.bmiColors[0].rgbReserved = 0;
PVOID pvBits;
m_hBmpAllWstDskWallpaper = ::CreateDIBSection(hdc, &bmpInfo, DIB_RGB_COLORS, &pvBits, m_hBmpMapFile, 0);
没有找到相关结果
已邀请:
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填盖
HDC hdc = ::GetDC(hWnd); int nScreenWidth = 1024; int nScreenHeight= 768; int nMemSize = nScreenWidth*nScreenHeight*3*7; HANDLE m_hBmpMapFile = ::CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, nMemSize, NULL); BITMAPINFO bmpInfo; //clear the memory ZeroMemory(&bmpInfo.bmiHeader, sizeof(BITMAPINFOHEADER)); //struct size bmpInfo.bmiHeader.biSize = sizeof (BITMAPINFOHEADER); //dimensions bmpInfo.bmiHeader.biWidth = nScreenWidth; bmpInfo.bmiHeader.biHeight = nScreenHeight; bmpInfo.bmiHeader.biPlanes = 1; bmpInfo.bmiHeader.biBitCount = 32; bmpInfo.bmiHeader.biSizeImage=nMemSize; void *pvBits = NULL; HANDLE m_hBmpAllWstDskWallpaper = ::CreateDIBSection(hdc, &bmpInfo, DIB_RGB_COLORS, &pvBits, m_hBmpMapFile, 0); int nError = ::GetLastError();