谁能指教指教 最好能有完整的例子谢谢了
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http://download.csdn.net/source/1626134
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有扩展函数dll,可实现截屏、压缩、字符加解密等,如果楼主需要可发送至邮箱
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给你段别人写的直接调用QQ的截屏的代码
Function int CameraSubArea() LIBRARY "CameraDll.dll"
Function Boolean CameraToBmp (ref string pFilename) LIBRARY "CameraToBmp.dll"
直接调用QQ的DLL
integer ii_return_msg
ii_return_msg =CameraSubArea()
IF ii_return_msg =1 THEN
string is_filepath,is_filename,is_file_allname
is_filepath =g_szpath+"\EmailTemp\"
is_filename ="temp"+string(time(now()),"hhmmss")+".bmp"
is_file_allname =is_filepath + is_filename
IF CameraToBmp(ref is_file_allname) THEN
///////
end if
END IF
CameraDll.dll在QQ上有,你自己找
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1.如果只是简单的截屏,可以用模拟printscreent键来实现
2.可以用api函数
//////////////////////////////////////////////////////////////////////
//
// Function: of_SaveWindow
//
// Purpose: 抓取窗口内容,并保存为指定文件
//
// Scope: public
//
// Arguments: hwnd ulong 需抓取的窗口句柄
// filename string 需保存的文件名
//
// Returns: boolean
//
// Last Date: 2004/06/12 Author: 胖无极 Email:[email protected]
[email protected]/////
blob b_imagedata
ulong hdc, hmemdc, hbmp
ulong dwNumColors, dwBPP, dwImageSize
ulong dwWidth, dwHeight
rect rt
hdc = n_api.GetWindowDC(hwnd)
hmemdc = n_api.CreateCompatibleDC(hdc)
if hdc <= 0 or hwnd <= 0 then return false
if n_api.IsIconic(hwnd) then return false
n_api.GetWindowRect(hwnd, rt)
dwWidth = rt.right - rt.left
dwHeight = rt.bottom - rt.top
if dwWidth <= 0 or dwHeight <= 0 then return false
hbmp = n_api.CreateCompatibleBitmap(hdc, dwWidth, dwHeight)
n_api.SelectObject(hmemdc, hbmp)
n_api.BitBlt(hmemdc, 0, 0, dwWidth, dwHeight, hdc, 0, 0, n_api.SRCCOPY)
dwBPP = n_api.GetDeviceCaps(hdc, n_api.BITSPIXEL)
if dwBPP <= 8 then
dwNumColors = n_api.GetDeviceCaps(hdc, n_api.NUMCOLORS)
else
dwNumColors = 0
end if
dwImageSize = dwWidth * dwHeight * dwBPP/8 //每个字节由8位组成
BitmapInfo lstr_Info
BitmapFileHeader lstr_Header
//填充BitmapFileHeader
lstr_Info.bmiheader.biSize = 40
lstr_Info.bmiheader.biWidth = dwWidth
lstr_Info.bmiheader.biHeight = dwHeight
lstr_Info.bmiheader.biPlanes = 1
lstr_Info.bmiheader.biBitCount = dwBPP