| 发表于：2007-04-23 12:48:381楼 得分:10 |
hwnd hdeskwnd = ::getdesktopwindow（);//获得屏幕的hwnd.
hdc hscreendc = ::getdc（hdeskwnd); //获得屏幕的hdc.
hdc memdc = ::createcompatibledc（hscreendc);
rect rect;
::getwindowrect（hdeskwnd,&rect);
hbitmap hbitmap = ::createcompatiblebitmap（hscreendc,rect.right,rect.bottom);
hgdiobj holdbmp = ::selectobject（memdc,hbitmap);
::bitblt（memdc,0,0,rect.right,rect.bottom,hscreendc,rect.left,rect.top,srccopy);
hbitmap=（hbitmap)::selectobject（memdc,holdbmp);
m_deskimage.attach（hbitmap);
istream* pstmimage = null;
hglobal hmembmp = globalalloc（gmem_moveable,0);//可移动的缓冲区
if （hmembmp == null) return null;
createstreamonhglobal（hmembmp, false, &pstmimage);//将内存区b作为流的起始
if （pstmimage == null)
{
globalfree（hmembmp);
messagebox（ "为空 ");
return null;
}
m_deskimage.save（pstmimage,gdiplus::imageformatjpeg);
byte* pbybmp = （byte *)globallock（hmembmp);//得到缓冲区的起始地址
//cfile mfile（ "234.jpg ",cfile::modecreate ¦cfile::modewrite ¦cfile::typebinary);
globalunlock（hmembmp);
//mfile.write（pbybmp,globalsize（hmembmp));
//mfile.close（);
int msize=globalsize（hmembmp);
int seek=0;
int sndcount=0;
m_gpackage.ncount=msize;
while （1)
{
memcpy（m_gpackage.m_buf,pbybmp+seek,3072);
sndcount=m_clientsock.send（&m_gpackage,sizeof（package));
seek+=3072;
//trace（ "%d,seek:%d,size:%d\n ",sndcount,seek,msize);
if（msize-seek <=3072)
{
memcpy（m_gpackage.m_buf,pbybmp+seek,msize-seek);
sndcount=m_clientsock.send（&m_gpackage,sizeof（package));
break;
}
}
pstmimage-> release（);
globalfree（hmembmp);
if（m_deskimage)
{
m_deskimage.detach（);
::deleteobject（hbitmapc);
m_deskimage.destroy（);
}
::deleteobject（hbitmap);
//::releasedc（hdeskwnd,memdc)
::deleteobject（memdc);
::deletedc（memdc);
::releasedc（hdeskwnd,hscreendc);
::deletedc（hscreendc); | | |
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