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呃，一直想有一个这样功能的软件，但是貌似木有找到啊。
于是自己写了一个比较挫的。。
思路，截取ForegroundWindow图像生成png
void SavePictureAsPng(LPCTSTR lpFile)
{
HWND hwnd = GetForegroundWindow();
HDC hdcSrc = GetDC(hwnd);
int nBitPerPixel = GetDeviceCaps(hdcSrc, BITSPIXEL);
int nWidth = GetDeviceCaps(hdcSrc, HORZRES);
int nHeight = GetDeviceCaps(hdcSrc, VERTRES);
CImage image;
image.Create(nWidth, nHeight, nBitPerPixel);
BitBlt(image.GetDC(), 0, 0, nWidth, nHeight, hdcSrc, 0, 0, SRCCOPY);
ReleaseDC(NULL, hdcSrc);
image.ReleaseDC();
image.Save(lpFile, Gdiplus::ImageFormatPNG);
}
int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
_In_ LPTSTR lpCmdLine,
_In_ int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
// TODO: Place code here.
MSG msg = {0};
HACCEL hAccelTable;
// Initialize global strings
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_SCREENCAPTURE, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);
// Perform application initialization:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}
hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_SCREENCAPTURE));
for (int i = 0; i < 10; i++)
{
TCHAR strFile[MAX_PATH];
StringCchPrintf(strFile, RTL_NUMBER_OF(strFile),
_T("D:\\Leen\\%02d.png"),i);
SavePictureAsPng(strFile);
Sleep(300);
}
LaunchWithShellExecuteEx(_T("D:\\Leen\\TestGif.exe"), NULL, SW_SHOW,TRUE);
LaunchWithShellExecuteEx(_T("D:\\Leen\\Test.Gif"), NULL, SW_SHOW, FALSE);
// Main message loop:
/*while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}*/
return (int) msg.wParam;
}
int main(array<System::String ^> ^args)
{
// Console::WriteLine(L"Hello World");
String^ outputFilePath = L"D:\\Leen\\test.gif";
AnimatedGifEncoder^ e = gcnew AnimatedGifEncoder;
e->Start(outputFilePath);
e->SetDelay(200);
//-1:no repeat,0:always repeat
e->SetRepeat(0);
int i = 0;
for ( i = 0; i < 10; i++)
{
String^ imageFilePath = String::Format(L"D:\\Leen\\{0:00}.png", i);
e->AddFrame(Image::FromFile(imageFilePath));
}
e->Finish();
/* extract Gif */
String^ outputPath = L"D:\\Leen\\";
GifDecoder^ gifDecoder = gcnew GifDecoder();
gifDecoder->Read(outputFilePath);
for (int i = 0, count = gifDecoder->GetFrameCount(); i < count; i++)
{
Image^ frame = gifDecoder->GetFrame(i); // frame i
frame->Save(outputPath + Guid::NewGuid().ToString() + L".png", ImageFormat::Png);
}
return 0;
}</pre><pre class="cpp" name="code" snippet_file_name="blog_20160510_5_5738037" code_snippet_id="1677473">
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原文地址：http://blog.csdn.net/linlin003/article/details/51362370
