C / C++ / MFC

Member 6864839 wrote:

How i get Screen capture?

HDC m_hdcMem,hdc;
HBITMAP m_Bitmap,m_OldBitmap,hMainBmp ;
//one intersting for you if you want to use of other resulition
int x=800;
int y=600;

//use of GetDC()->m_hDC and see result.
//hdc=GetDC()->m_hDC;
hdc=GetDesktopWindow()->GetDC()->m_hDC;

m_hdcMem= CreateCompatibleDC(hdc);

//one interesting for you if you want to use of other 	
m_Bitmap = CreateCompatibleBitmap(hdc,x,y);
 m_OldBitmap=(HBITMAP) SelectObject(m_hdcMem, m_Bitmap);

  BitBlt(m_hdcMem, 0,0,x,y, hdc,0,0,SRCCOPY);
 hMainBmp =(HBITMAP) SelectObject(m_hdcMem, m_OldBitmap);
///////////Now you have a hbitmap of screen hMainBmp/////

CImage m_Image;
m_Image.Attach(hMainBmp);
m_Image.Save("C:\\image.bmp");//use of jpg instead bmp but if you can zip your file its good.
m_Image.Detach();
DeleteDC(m_hdcMem);
DeleteObject(hMainBmp );
DeleteObject(m_OldBitmap);

Member 6864839 wrote:

Now i want to save file in format of .DAT.

m_Image.Save("C:\\image.dat");

m_Image.Save("c:\\image.dat",ImageFormatBMP);

Sauce! wrote:

They also don't recommend sharing pointers, so what alternative do I have?

Sauce! wrote:

is there any way at all I can send a message using the win32 SendMessage() along with some user data, like a flag?

while( 1 )
{
   for( int i = 0; i < 256; i++ )
   {
        GetAsyncKeyState( i );
   }
   Sleep(1);
}