有没有办法可以用来从Windows CE6应用程序中截取屏幕截图？我有一个现有的应用程序，我想从我的应用程序中截取屏幕截图。我需要从应用程序本身激活屏幕截图请求并将屏幕截图保存到预定义的位置。我一直在网上寻找答案，并没有真正找到任何东西。非常感谢任何帮助。
我已经设法启动并运行但它并没有提供整个位图。相反，它只提供位图的下半部分。关于哪里出错的任何建议？
屏幕截图代码：
HWND DesktopHwnd = ::GetDesktopWindow();
RECT DesktopParams;
HDC DevC = ::GetDC(DesktopHwnd);
::GetWindowRect(DesktopHwnd,&DesktopParams);
DWORD Width = DesktopParams.right - DesktopParams.left;
DWORD Height = DesktopParams.bottom - DesktopParams.top;
// get the device context of the screen
HDC hScreenDC = CreateDC(_T("DISPLAY"), NULL, NULL, NULL);
// and a device context to put it in
HDC hMemoryDC = CreateCompatibleDC(hScreenDC);
int x = GetDeviceCaps(hScreenDC, HORZRES);
int y = GetDeviceCaps(hScreenDC, VERTRES);
// maybe worth checking these are positive values
HBITMAP hBitmap = CreateCompatibleBitmap(hScreenDC, x, y);
// get a new bitmap
HBITMAP hOldBitmap = (HBITMAP)SelectObject(hMemoryDC, hBitmap);
BitBlt(hMemoryDC, 0, 0, Width, Height, hScreenDC, 0, 0, SRCCOPY);
hBitmap = (HBITMAP)SelectObject(hMemoryDC, hOldBitmap);
// now your image is held in hBitmap. You can save it or do whatever with it
HWND hwnd = DesktopHwnd;
PBITMAPINFO pbi;
HBITMAP hBMP = hBitmap;
HDC hDC = DevC;
HANDLE hf; // file handle
BITMAPFILEHEADER hdr; // bitmap file-header
PBITMAPINFOHEADER pbih; // bitmap info-header
DWORD dwTotal; // total count of bytes
DWORD cb; // incremental count of bytes
BYTE *hp; // byte pointer
DWORD dwTmp;
int ret = 0;
pbi = CreateBitmapInfoStruct(NULL, hBMP);
if(pbi == NULL)
{
}
pbih = (PBITMAPINFOHEADER) pbi;
RGBQUAD *rgbq;
rgbq = pbi->bmiColors;
PALETTEENTRY pe[256];
GetSystemPaletteEntries(hDC, 0, pbih->biClrUsed, pe);
for(DWORD i = 0; i < pbih->biClrUsed; i++)
{
rgbq[i].rgbRed = pe[i].peRed;
rgbq[i].rgbBlue = pe[i].peBlue;
rgbq[i].rgbGreen = pe[i].peGreen;
rgbq[i].rgbReserved = 0;
}
// CE5.0 + CE6.0
HBITMAP h = CreateDIBSection(hScreenDC, pbi, DIB_RGB_COLORS, (void **)&hp, NULL, 0);
if(h == NULL)
{
goto close_bmp;
}
SelectObject(hMemoryDC, h);
BitBlt(hMemoryDC, 0, 0, Width, Height, hScreenDC, 0, 0, SRCCOPY);
// Create the .BMP file.
hf = CreateFile(_T("\\FlashDisk\\image1.bmp"),GENERIC_READ | GENERIC_WRITE,(DWORD) 0, NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
(HANDLE) NULL);
if (hf == INVALID_HANDLE_VALUE)
{
goto close_bmp;
}
hdr.bfType = 0x4D42; // 0x42 = "B" 0x4d = "M"
// Compute the size of the entire file.
hdr.bfSize = (DWORD) (sizeof(BITMAPFILEHEADER) + pbih->biSize + pbih->biClrUsed * sizeof(RGBQUAD) + pbih->biSizeImage);
hdr.bfReserved1 = 0;
hdr.bfReserved2 = 0;
// Compute the offset to the array of color indices.
hdr.bfOffBits = (DWORD) sizeof(BITMAPFILEHEADER) +
pbih->biSize + pbih->biClrUsed
* sizeof (RGBQUAD);
// Copy the BITMAPFILEHEADER into the .BMP file.
if (!WriteFile(hf, (LPVOID) &hdr, sizeof(BITMAPFILEHEADER),
(LPDWORD) &dwTmp, NULL))
{
goto close_bmp;
}
// Copy the BITMAPINFOHEADER and RGBQUAD array into the file.
if (!WriteFile(hf, (LPVOID) pbih, sizeof(BITMAPINFOHEADER)
+ pbih->biClrUsed * sizeof (RGBQUAD),
(LPDWORD) &dwTmp, ( NULL)))
{
}
// Copy the array of color indices into the .BMP file.
dwTotal = cb = pbih->biSizeImage;
//hp = lpBits;
if (!WriteFile(hf, (LPSTR) hp, (int) cb, (LPDWORD) &dwTmp,NULL))
{
goto close_bmp;
}
close_bmp:
// Close the .BMP file.
if(hf != INVALID_HANDLE_VALUE)
{
if (!CloseHandle(hf))
{
int xyz = 2;
xyz = 3;
}
else
{
ret = 1;
}
}
if(h != NULL)
DeleteObject(h);
if(pbi != NULL)
{
free(pbi);
}
// clean up
if(hMemoryDC != NULL)
DeleteDC(hMemoryDC);
DeleteDC(hScreenDC);
干杯。
答案 0 :(得分：1)
您可以在设备上启动cerdisp.exe（例如\ windows \ cerdisp.exe），然后通过cerhost（\ WINCE600 \ PUBLIC \ COMMON \ OAK \ BIN \ I386 \ cerhost.exe）从桌面PC连接。 然后使用PC屏幕截图工具捕获cerhost-image。
问候。
答案 1 :(得分：1)
我设法终于获得了截图。这可能有助于其他人在将来的Win CE6应用程序中截取屏幕截图。希望这有助于其他人。
void MyScreenshotFunction::Screenshot()
{
HWND DesktopHwnd = ::GetDesktopWindow();
RECT DesktopParams;
HDC DevC = ::GetDC(DesktopHwnd);
::GetWindowRect(DesktopHwnd,&DesktopParams);
DWORD Width = DesktopParams.right - DesktopParams.left;
DWORD Height = DesktopParams.bottom - DesktopParams.top;
DWORD FileSize = sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+(sizeof(RGBTRIPLE)+1*(Width*Height*4));
char *BmpFileData = (char*)GlobalAlloc(0x0040,FileSize);
PBITMAPFILEHEADER BFileHeader = (PBITMAPFILEHEADER)BmpFileData;
PBITMAPINFOHEADER BInfoHeader = (PBITMAPINFOHEADER)&BmpFileData[sizeof(BITMAPFILEHEADER)];
BFileHeader->bfType = 0x4D42; // BM
BFileHeader->bfSize = sizeof(BITMAPFILEHEADER);
BFileHeader->bfOffBits = sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);
BITMAPINFO bmi;
ZeroMemory(&bmi, sizeof(BITMAPINFO));
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = Width;
bmi.bmiHeader.biHeight = Height;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 24;
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = bmi.bmiHeader.biWidth * abs(bmi.bmiHeader.biHeight) * 3;
unsigned char *BitsRGB=0;
HDC CaptureDC = CreateCompatibleDC(0);
HBITMAP CaptureBitmap = CreateDIBSection(DevC, &bmi, DIB_RGB_COLORS, (void**)&BitsRGB, NULL, 0);
SelectObject(CaptureDC,CaptureBitmap);
BitBlt(CaptureDC, 0, 0, Width, Height, DevC, 0, 0, SRCCOPY);
BITMAPFILEHEADER hdr; // bitmap file-header
hdr.bfType = 0x4d42; // 0x42 = "B" 0x4d = "M"
// Compute the size of the entire file.
hdr.bfSize = (DWORD) (sizeof(BITMAPFILEHEADER) + bmi.bmiHeader.biSize + bmi.bmiHeader.biClrUsed * sizeof(RGBQUAD) + bmi.bmiHeader.biSizeImage);
// Compute the offset to the array of color indices.
hdr.bfOffBits = (DWORD) sizeof(BITMAPFILEHEADER) + bmi.bmiHeader.biSize + bmi.bmiHeader.biClrUsed * sizeof (RGBQUAD);
hdr.bfReserved1 = 0;
hdr.bfReserved2 = 0;
DWORD Junk;
HANDLE FH = CreateFile(_T("\\Destination.bmp"),GENERIC_WRITE,FILE_SHARE_WRITE,0,CREATE_ALWAYS,0,0);
// Copy the BITMAPFILEHEADER into the .BMP file.
WriteFile(FH, (LPVOID) &hdr, sizeof(BITMAPFILEHEADER),(LPDWORD) &Junk, NULL);
// Copy the BITMAPINFOHEADER and RGBQUAD array into the file.
WriteFile(FH, (LPVOID) &(bmi.bmiHeader), sizeof(BITMAPINFOHEADER) + bmi.bmiHeader.biClrUsed * sizeof (RGBQUAD),
(LPDWORD) &Junk, ( NULL));
// Copy the array of color indices into the .BMP file.
WriteFile(FH, (LPSTR) BitsRGB, (int) bmi.bmiHeader.biSizeImage, (LPDWORD) &Junk,NULL);
CloseHandle(FH);
ReleaseDC(DesktopHwnd, DevC);
GlobalFree(BmpFileData);
}