//获取当前屏幕的并且保存图片
LRESULT CFeetScanView::SaveViewBMP(WPARAM wParam, LPARAM lParam)
{
CRect rect;
this->GetClientRect(&rect);
rect.left = ;
rect.top = ;
CBitmap m_bitmap;
m_bitmap.m_hObject = CopyScreenToBitmap(rect); char szFileName[_MAX_PATH];
char szPath[_MAX_PATH];
GetConfigMgr()->GetModuleDirectory( szPath);
sprintf( szFileName, "%s\\image.png", szPath);
SaveBitmapToFile(m_bitmap,szFileName);
return ;
} HBITMAP CFeetScanView::CopyScreenToBitmap(LPRECT lpRect)
{
// 屏幕和内存设备描述表
HDC hScrDC=, hMemDC;
// 位图句柄
HBITMAP hBitmap, hOldBitmap;
// 选定区域坐标
int nX, nY, nX2, nY2;
// 位图宽度和高度
int nWidth, nHeight;
// 屏幕分辨率
int xScrn, yScrn;
// 确保选定区域不为空矩形
// if (IsRectEmpty(lpRect))
// return NULL;
//为屏幕创建设备描述表
hScrDC = CreateDC( "DISPLAY", NULL, NULL, NULL);
//
int ok=;
if(hScrDC==NULL) //如果创建失败
{
ok=;
}
//为屏幕设备描述表创建兼容的内存设备描述表
hMemDC = CreateCompatibleDC(hScrDC);
// 获得选定区域坐标
nX = lpRect-> left;
nY = lpRect-> top;
nX2 = lpRect-> right;
nY2 = lpRect-> bottom;
// 获得屏幕分辨率
xScrn = GetDeviceCaps(hScrDC, HORZRES);
yScrn = GetDeviceCaps(hScrDC, VERTRES);
//确保选定区域是可见的
if (nX <)
nX = ;
if (nY < )
nY = ;
if (nX2 > xScrn)
nX2 = xScrn;
if (nY2 > yScrn)
nY2 = yScrn;
nWidth = nX2 - nX;
nHeight = nY2 - nY; // 创建一个与屏幕设备描述表兼容的位图
hBitmap = CreateCompatibleBitmap(hScrDC, nWidth, nHeight); // 把新位图选到内存设备描述表中
hOldBitmap = (HBITMAP)SelectObject(hMemDC, hBitmap); // 把屏幕设备描述表拷贝到内存设备描述表中
BitBlt(hMemDC, , , nWidth, nHeight,hScrDC, nX, nY, SRCCOPY); //得到屏幕位图的句柄
hBitmap =(HBITMAP)SelectObject(hMemDC, hOldBitmap); //清除
DeleteDC(hScrDC);
DeleteDC(hMemDC); // 返回位图句柄
return hBitmap;
} BOOL CFeetScanView::SaveBitmapToFile(HBITMAP hBitmap, LPCTSTR lpFileName )
{
HDC hDC; //设备描述表
int iBits; //当前显示分辨率下每个像素所占字节数
WORD wBitCount; //位图中每个像素所占字节数
DWORD dwPaletteSize=, //定义调色板大小， 位图中像素字节大小 ，位图文件大小 ， 写入文件字节数
dwBmBitsSize,
dwDIBSize, dwWritten;
BITMAP Bitmap; //位图属性结构
BITMAPFILEHEADER bmfHdr; //位图文件头结构
BITMAPINFOHEADER bi; //位图信息头结构
LPBITMAPINFOHEADER lpbi; //指向位图信息头结构 HANDLE fh, hDib, hPal,hOldPal=NULL; //定义文件，分配内存句柄，调色板句柄 //计算位图文件每个像素所占字节数
HDC hWndDC = CreateDC("DISPLAY",NULL,NULL,NULL);
hDC = ::CreateCompatibleDC( hWndDC ) ;
iBits = GetDeviceCaps(hDC, BITSPIXEL) * GetDeviceCaps(hDC, PLANES);
DeleteDC(hDC); if (iBits <= )
wBitCount = ;
else if (iBits <= )
wBitCount = ;
else if (iBits <= )
wBitCount = ;
else if (iBits <= )
wBitCount = ;
else
wBitCount = ; //计算调色板大小
if (wBitCount <= )
dwPaletteSize = ( << wBitCount) * sizeof(RGBQUAD); //设置位图信息头结构
GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&Bitmap);
bi.biSize = sizeof(BITMAPINFOHEADER);
bi.biWidth = Bitmap.bmWidth;
bi.biHeight = Bitmap.bmHeight;
bi.biPlanes = ;
bi.biBitCount = wBitCount;
bi.biCompression = BI_RGB;
bi.biSizeImage = ;
bi.biXPelsPerMeter = ;
bi.biYPelsPerMeter = ;
bi.biClrUsed = ;
bi.biClrImportant = ; dwBmBitsSize = ((Bitmap.bmWidth * wBitCount+)/) * * Bitmap.bmHeight ; //为位图内容分配内存
hDib = GlobalAlloc(GHND,dwBmBitsSize+dwPaletteSize+sizeof(BITMAPINFOHEADER));
lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);
*lpbi = bi; // 处理调色板
hPal = GetStockObject(DEFAULT_PALETTE);
if (hPal)
{
hDC = ::GetDC(NULL);
hOldPal = ::SelectPalette(hDC, (HPALETTE)hPal, FALSE);
RealizePalette(hDC);
} // 获取该调色板下新的像素值
GetDIBits(hDC, hBitmap, , (UINT) Bitmap.bmHeight,
(LPSTR)lpbi + sizeof(BITMAPINFOHEADER)
+dwPaletteSize,
(LPBITMAPINFO )
lpbi, DIB_RGB_COLORS); //恢复调色板
if (hOldPal)
{
SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
RealizePalette(hDC);
::ReleaseDC(NULL, hDC);
} //创建位图文件
fh = CreateFile(lpFileName, GENERIC_WRITE,
, NULL, CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL); if (fh == INVALID_HANDLE_VALUE)
return FALSE; // 设置位图文件头
bmfHdr.bfType = 0x4D42; // "BM"
dwDIBSize = sizeof(BITMAPFILEHEADER)
+ sizeof(BITMAPINFOHEADER)
+ dwPaletteSize + dwBmBitsSize;
bmfHdr.bfSize = dwDIBSize;
bmfHdr.bfReserved1 = ;
bmfHdr.bfReserved2 = ;
bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER)
+ (DWORD)sizeof(BITMAPINFOHEADER)
+ dwPaletteSize; // 写入位图文件头
WriteFile(fh, (LPSTR)&bmfHdr, sizeof(BITMAPFILEHEADER), &dwWritten, NULL); // 写入位图文件其余内容
WriteFile(fh, (LPSTR)lpbi, dwDIBSize,
&dwWritten, NULL); //清除
GlobalUnlock(hDib);
GlobalFree(hDib);
CloseHandle(fh); return TRUE; } //将当前的图片进行90度显示出来
CDC* pDC1 = m_left_pic.GetDC();
Graphics graph(pDC1->GetSafeHdc());
CRect rect;
m_left_pic.GetClientRect(rect); char szFileName[_MAX_PATH];
char szPath[_MAX_PATH];
GetConfigMgr()->GetModuleDirectory( szPath);
sprintf( szFileName, "%s\\image.png", szPath);
WCHAR wszWideString[_MAX_PATH];
wcscpy(wszWideString, CT2CW(szFileName));
Image image(wszWideString); REAL width = (REAL)image.GetWidth();
REAL height = (REAL)image.GetHeight();
int nX = ;
int nY = ;
Point point90[] = {
Point(nX + height,nY),
Point(nX + height,nY+width),
Point(nX,nY)
}; graph.DrawImage(&image, point90,);
ReleaseDC(pDC1);