#include <atlimage.h> #include <atltime.h> #include <conio.h> //截取全屏保存为png CString ScreenShot() { HDC hDCScreen = ::GetDC(NULL);//首先获取到屏幕的句柄 int nBitPerPixel = GetDeviceCaps(hDCScreen, BITSPIXEL);//获取到每个像素的bit数目 int nWidthScreen = GetDeviceCaps(hDCScreen, HORZRES); int nHeightScreen = GetDeviceCaps(hDCScreen, VERTRES); //创建一个CImage的对象 CImage m_MyImage; //Create实例化CImage,使得其内部的画布大小与屏幕一致 m_MyImage.Create(nWidthScreen, nHeightScreen, nBitPerPixel); //获取到CImage的 HDC,但是需要手动ReleaseDC操作,下面是MSDN的说明 //Because only one bitmap can be selected into a device context at a time, //you must call ReleaseDC for each call to GetDC. HDC hDCImg = m_MyImage.GetDC(); //使用bitblt 将屏幕的DC画布上的内容 拷贝到CImage上 BitBlt(hDCImg, 0, 0, nWidthScreen, nHeightScreen, hDCScreen, 0, 0, SRCCOPY); //保存到的文件名 CString strFileName("C:\"); strFileName += _T("ScreenShot\"); CreateDirectory((LPCTSTR)strFileName, NULL); CTime t = CTime::GetCurrentTime(); CString tt = t.Format(_T("%Y-%m-%d_%H-%M-%S")); strFileName += tt; strFileName += _T(".PNG"); //直接保存吧 m_MyImage.Save(strFileName, Gdiplus::ImageFormatPNG); //前面调用了GetDC所以需要调用ReleaseDC释放掉 //详情请参见MSDN m_MyImage.ReleaseDC(); return strFileName; } void main() { ScreenShot(); _getch(); }
代码来源: https://blog.csdn.net/sunflover454/article/details/50629063
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