//程序可以保存图片为001.bmp , 但是有600多MB, ACDSEE打开后黑屏什么也没有??
//处理即给分void CBmpOptDlg::OnCap()
{
// TODO: Add your control notification handler code here
CWnd *pWnd=GetDesktopWindow(); //GetActiveWindow()
pWnd->GetWindowRect(&rect); CopyScreenToBitmap(rect);
CString str="e:\\001.bmp";
char * cfile;
cfile=str.GetBuffer(0);
SaveBitmapToFile(hBitmap,cfile);
}HBITMAP CBmpOptDlg::CopyScreenToBitmap(CRect &rect)//LPRECT lpRect)
//lpRect 代表选定区域
{
HDC hScrDC, hMemDC;
// 屏幕和内存设备描述表
HBITMAP hBitmap, hOldBitmap;
// 位图句柄
int nX, nY, nX2, nY2;
// 选定区域坐标
int nWidth, nHeight;
// 位图宽度和高度
int xScrn, yScrn;
// 屏幕分辨率
// 确保选定区域不为空矩形 if (IsRectEmpty(rect)) //lpRect))
return NULL; //为屏幕创建设备描述表
hScrDC = CreateDC("DISPLAY", NULL, NULL, NULL); //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 =rect.left;
nY =rect.top;
nX2 =rect.right;
nY2 =rect.bottom; /* 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 < 0)
nX = 0; if (nY < 0)
nY = 0; 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, 0, 0, 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;}int CBmpOptDlg::SaveBitmapToFile(HBITMAP hBitmap , LPSTR lpFileName) //hBitmap 为刚才的屏幕位图句柄
//lpFileName 为位图文件名
{
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
//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
DWORD dwPaletteSize=0,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 = CreateDC("DISPLAY",NULL,NULL,NULL);
iBits = GetDeviceCaps(hDC, BITSPIXEL) *
GetDeviceCaps(hDC, PLANES); DeleteDC(hDC); if (iBits <= 1)
wBitCount = 1; else if (iBits <= 4)
wBitCount = 4; else if (iBits <= 8)
wBitCount = 8; else if (iBits <= 24)
wBitCount = 24; //计算调色板大小
if (wBitCount <= 8)
dwPaletteSize = (1 << 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 = 1;
bi.biBitCount = wBitCount;
bi.biCompression = BI_RGB;
bi.biSizeImage = 0;
bi.biXPelsPerMeter = 0;
bi.biYPelsPerMeter = 0;
bi.biClrUsed = 0;
bi.biClrImportant = 0;
dwBmBitsSize = ((Bitmap.bmWidth * wBitCount+31)/32)* 4 * 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()->m_hDC;
hOldPal = SelectPalette(hDC, (HPALETTE)hPal, FALSE);
RealizePalette(hDC);
} // 获取该调色板下新的像素值 BITMAPINFOHEADER
GetDIBits(hDC, hBitmap, 0, (UINT) Bitmap.bmHeight,
(LPSTR)lpbi + sizeof(BITMAPINFOHEADER)+dwPaletteSize, (BITMAPINFO*)lpbi, DIB_RGB_COLORS); //恢复调色板
if (hOldPal)
{
SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
RealizePalette(hDC);
//ReleaseDC(); } //创建位图文件
fh = CreateFile(lpFileName, GENERIC_WRITE, 0, 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 = 0;
bmfHdr.bfReserved2 = 0;
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);
}
//处理即给分void CBmpOptDlg::OnCap()
{
// TODO: Add your control notification handler code here
CWnd *pWnd=GetDesktopWindow(); //GetActiveWindow()
pWnd->GetWindowRect(&rect); CopyScreenToBitmap(rect);
CString str="e:\\001.bmp";
char * cfile;
cfile=str.GetBuffer(0);
SaveBitmapToFile(hBitmap,cfile);
}HBITMAP CBmpOptDlg::CopyScreenToBitmap(CRect &rect)//LPRECT lpRect)
//lpRect 代表选定区域
{
HDC hScrDC, hMemDC;
// 屏幕和内存设备描述表
HBITMAP hBitmap, hOldBitmap;
// 位图句柄
int nX, nY, nX2, nY2;
// 选定区域坐标
int nWidth, nHeight;
// 位图宽度和高度
int xScrn, yScrn;
// 屏幕分辨率
// 确保选定区域不为空矩形 if (IsRectEmpty(rect)) //lpRect))
return NULL; //为屏幕创建设备描述表
hScrDC = CreateDC("DISPLAY", NULL, NULL, NULL); //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 =rect.left;
nY =rect.top;
nX2 =rect.right;
nY2 =rect.bottom; /* 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 < 0)
nX = 0; if (nY < 0)
nY = 0; 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, 0, 0, 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;}int CBmpOptDlg::SaveBitmapToFile(HBITMAP hBitmap , LPSTR lpFileName) //hBitmap 为刚才的屏幕位图句柄
//lpFileName 为位图文件名
{
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
//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
DWORD dwPaletteSize=0,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 = CreateDC("DISPLAY",NULL,NULL,NULL);
iBits = GetDeviceCaps(hDC, BITSPIXEL) *
GetDeviceCaps(hDC, PLANES); DeleteDC(hDC); if (iBits <= 1)
wBitCount = 1; else if (iBits <= 4)
wBitCount = 4; else if (iBits <= 8)
wBitCount = 8; else if (iBits <= 24)
wBitCount = 24; //计算调色板大小
if (wBitCount <= 8)
dwPaletteSize = (1 << 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 = 1;
bi.biBitCount = wBitCount;
bi.biCompression = BI_RGB;
bi.biSizeImage = 0;
bi.biXPelsPerMeter = 0;
bi.biYPelsPerMeter = 0;
bi.biClrUsed = 0;
bi.biClrImportant = 0;
dwBmBitsSize = ((Bitmap.bmWidth * wBitCount+31)/32)* 4 * 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()->m_hDC;
hOldPal = SelectPalette(hDC, (HPALETTE)hPal, FALSE);
RealizePalette(hDC);
} // 获取该调色板下新的像素值 BITMAPINFOHEADER
GetDIBits(hDC, hBitmap, 0, (UINT) Bitmap.bmHeight,
(LPSTR)lpbi + sizeof(BITMAPINFOHEADER)+dwPaletteSize, (BITMAPINFO*)lpbi, DIB_RGB_COLORS); //恢复调色板
if (hOldPal)
{
SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
RealizePalette(hDC);
//ReleaseDC(); } //创建位图文件
fh = CreateFile(lpFileName, GENERIC_WRITE, 0, 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 = 0;
bmfHdr.bfReserved2 = 0;
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);
}
{
CDC dc;
dc.CreateDC("DISPLAY",NULL,NULL,NULL);
CBitmap bm;
int Width=GetSystemMetrics(SM_CXSCREEN);
int Height=GetSystemMetrics(SM_CYSCREEN);
bm.CreateCompatibleBitmap(&dc,Width,Height);
CDC tdc;
tdc.CreateCompatibleDC(&dc);
CBitmap*pOld=tdc.SelectObject(&bm);
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY);
tdc.SelectObject(pOld);
BITMAP btm;
bm.GetBitmap(&btm);
DWORD size=btm.bmWidthBytes*btm.bmHeight;
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size);
/////////////////////////////////////////////
BITMAPINFOHEADER bih;
bih.biBitCount=btm.bmBitsPixel;
bih.biClrImportant=0;
bih.biClrUsed=0;
bih.biCompression=0;
bih.biHeight=btm.bmHeight;
bih.biPlanes=1;
bih.biSize=sizeof(BITMAPINFOHEADER);
bih.biSizeImage=size;
bih.biWidth=btm.bmWidth;
bih.biXPelsPerMeter=0;
bih.biYPelsPerMeter=0;
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS);
//bm.GetBitmapBits(size,lpData);//此函数在处理5-5-5模式的16位色下会出现颜色混乱
static int filecount=0;
CString name;
name.Format("pict%04d.bmp",filecount++);
name=m_Path+name;
BITMAPFILEHEADER bfh;
bfh.bfReserved1=bfh.bfReserved2=0;
bfh.bfType=((WORD)('M'<< 8)|'B');
bfh.bfSize=54+size;
bfh.bfOffBits=54;
CFile bf;
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER));
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER));
bf.WriteHuge(lpData,size);
bf.Close();
nCount++;
}
GlobalFreePtr(lpData);
if(nCount==1)
m_Number.Format("%d picture captured.",nCount);
else
m_Number.Format("%d pictures captured.",nCount);
UpdateData(FALSE);
}