Hi All,
how do I find the handle of a child window and get a screenshot of that
in a hbitmap at present i tried the below method but am getting the
screenshot of the desktop. the Egyptian Addiction is the name of the game
and the mozillacontentw indowclass is the handle i need who's window i want
to capture
int nScreenWidth = 300;
int nScreenHeight = 225;
//hwnd1 = FindWindow( NULL, "Egyptian Addiction" );
HWND hDesktopWnd = FindWindow( NULL, "MozillaContent WindowClass" );
HDC hDesktopDC = GetDC(hDesktopW nd);
HDC hCaptureDC = CreateCompatibl eDC(hDesktopDC) ;
HBITMAP hCaptureBitmap =CreateCompatib leBitmap(hDeskt opDC, nScreenWidth,
nScreenHeight);
SelectObject(hC aptureDC,hCaptu reBitmap);
BitBlt(hCapture DC,0,0,nScreenW idth,nScreenHei ght,hDesktopDC, 0,0,SRCCOPY);
ReleaseDC(hDesk topWnd,hDesktop DC);
DeleteDC(hCaptu reDC);
DeleteObject(hC aptureBitmap);
return hCaptureBitmap;
regards
Abhishek
4  2406 
Hi,
First you need to get the rect of the window for which you are want to
capture image. Here you have just hardcoded it.
Secondly make sure that the window is visible on the screen.
Hope this helps
WBR
Dinesh Venugopalan
"Abhishek" <sh***@activele ment.comwrote in message
news:%2******** ********@TK2MSF TNGP04.phx.gbl. ..
Hi All,
how do I find the handle of a child window and get a screenshot of that
in a hbitmap at present i tried the below method but am getting the
screenshot of the desktop. the Egyptian Addiction is the name of the game
and the mozillacontentw indowclass is the handle i need who's window i want
to capture
int nScreenWidth = 300;
int nScreenHeight = 225;
//hwnd1 = FindWindow( NULL, "Egyptian Addiction" );
HWND hDesktopWnd = FindWindow( NULL, "MozillaContent WindowClass" );
HDC hDesktopDC = GetDC(hDesktopW nd);
HDC hCaptureDC = CreateCompatibl eDC(hDesktopDC) ;
HBITMAP hCaptureBitmap =CreateCompatib leBitmap(hDeskt opDC, nScreenWidth,
nScreenHeight);
SelectObject(hC aptureDC,hCaptu reBitmap);
BitBlt(hCapture DC,0,0,nScreenW idth,nScreenHei ght,hDesktopDC, 0,0,SRCCOPY);
ReleaseDC(hDesk topWnd,hDesktop DC);
DeleteDC(hCaptu reDC);
DeleteObject(hC aptureBitmap);
return hCaptureBitmap;
regards
Abhishek
Hi,
the window can be hidden as well.
I guess then u cant use this then. how do i then take a screenshot of a
hidden window then?
regards
Abhishek
"Dinesh Venugopalan" <di****@epiance .comwrote in message
news:eN******** ******@TK2MSFTN GP02.phx.gbl...
Hi,
First you need to get the rect of the window for which you are want to
capture image. Here you have just hardcoded it.
Secondly make sure that the window is visible on the screen.
Hope this helps
WBR
Dinesh Venugopalan
"Abhishek" <sh***@activele ment.comwrote in message
news:%2******** ********@TK2MSF TNGP04.phx.gbl. ..
>Hi All,
how do I find the handle of a child window and get a screenshot of
that in a hbitmap at present i tried the below method but am getting the
screenshot of the desktop. the Egyptian Addiction is the name of the game
and the mozillacontentw indowclass is the handle i need who's window i
want to capture
int nScreenWidth = 300;
int nScreenHeight = 225;
//hwnd1 = FindWindow( NULL, "Egyptian Addiction" );
HWND hDesktopWnd = FindWindow( NULL, "MozillaContent WindowClass" );
HDC hDesktopDC = GetDC(hDesktopW nd);
HDC hCaptureDC = CreateCompatibl eDC(hDesktopDC) ;
HBITMAP hCaptureBitmap =CreateCompatib leBitmap(hDeskt opDC, nScreenWidth,
nScreenHeight) ;
SelectObject(h CaptureDC,hCapt ureBitmap);
BitBlt(hCaptur eDC,0,0,nScreen Width,nScreenHe ight,hDesktopDC ,0,0,SRCCOPY);
ReleaseDC(hDes ktopWnd,hDeskto pDC);
DeleteDC(hCapt ureDC);
DeleteObject(h CaptureBitmap);
return hCaptureBitmap;
regards
Abhishek
"Abhishek" <sh***@activele ment.comwrote in message
news:Ou******** ******@TK2MSFTN GP05.phx.gbl...
Hi,
the window can be hidden as well.
I guess then u cant use this then. how do i then take a screenshot of a
hidden window then?
Send it WM_PRINT and a DC to draw onto.
>
regards
Abhishek
"Dinesh Venugopalan" <di****@epiance .comwrote in message
news:eN******** ******@TK2MSFTN GP02.phx.gbl...
>Hi,
First you need to get the rect of the window for which you are want to
capture image. Here you have just hardcoded it.
Secondly make sure that the window is visible on the screen.
Hope this helps
WBR
Dinesh Venugopalan
"Abhishek" <sh***@activele ment.comwrote in message
news:%2******* *********@TK2MS FTNGP04.phx.gbl ...
>>Hi All,
how do I find the handle of a child window and get a screenshot of
that in a hbitmap at present i tried the below method but am getting the
screenshot of the desktop. the Egyptian Addiction is the name of the
game and the mozillacontentw indowclass is the handle i need who's window
i want to capture
int nScreenWidth = 300;
int nScreenHeight = 225;
//hwnd1 = FindWindow( NULL, "Egyptian Addiction" );
HWND hDesktopWnd = FindWindow( NULL, "MozillaContent WindowClass" );
HDC hDesktopDC = GetDC(hDesktopW nd);
HDC hCaptureDC = CreateCompatibl eDC(hDesktopDC) ;
HBITMAP hCaptureBitmap =CreateCompatib leBitmap(hDeskt opDC, nScreenWidth,
nScreenHeight );
SelectObject( hCaptureDC,hCap tureBitmap);
BitBlt(hCaptu reDC,0,0,nScree nWidth,nScreenH eight,hDesktopD C,0,0,SRCCOPY);
ReleaseDC(hDe sktopWnd,hDeskt opDC);
DeleteDC(hCap tureDC);
DeleteObject( hCaptureBitmap) ;
return hCaptureBitmap;
regards
Abhishek
Thanks got this done!.
regards
Abhishek
"Ben Voigt" <rb*@nospam.nos pamwrote in message
news:OF******** ********@TK2MSF TNGP04.phx.gbl. ..
>
"Abhishek" <sh***@activele ment.comwrote in message
news:Ou******** ******@TK2MSFTN GP05.phx.gbl...
>Hi,
the window can be hidden as well.
I guess then u cant use this then. how do i then take a screenshot of a
hidden window then?
Send it WM_PRINT and a DC to draw onto.
>>
regards
Abhishek
"Dinesh Venugopalan" <di****@epiance .comwrote in message
news:eN******* *******@TK2MSFT NGP02.phx.gbl.. .
>>Hi,
First you need to get the rect of the window for which you are want to
capture image. Here you have just hardcoded it.
Secondly make sure that the window is visible on the screen.
Hope this helps
WBR
Dinesh Venugopalan
"Abhishek" <sh***@activele ment.comwrote in message
news:%2****** **********@TK2M SFTNGP04.phx.gb l...
Hi All,
how do I find the handle of a child window and get a screenshot of
that in a hbitmap at present i tried the below method but am getting
the screenshot of the desktop. the Egyptian Addiction is the name of
the game and the mozillacontentw indowclass is the handle i need who's
window i want to capture
int nScreenWidth = 300;
int nScreenHeight = 225;
//hwnd1 = FindWindow( NULL, "Egyptian Addiction" );
HWND hDesktopWnd = FindWindow( NULL, "MozillaContent WindowClass" );
HDC hDesktopDC = GetDC(hDesktopW nd);
HDC hCaptureDC = CreateCompatibl eDC(hDesktopDC) ;
HBITMAP hCaptureBitmap =CreateCompatib leBitmap(hDeskt opDC,
nScreenWidth , nScreenHeight);
SelectObject (hCaptureDC,hCa ptureBitmap);
BitBlt(hCapt ureDC,0,0,nScre enWidth,nScreen Height,hDesktop DC,0,0,SRCCOPY) ;
ReleaseDC(hD esktopWnd,hDesk topDC);
DeleteDC(hCa ptureDC);
DeleteObject (hCaptureBitmap );
return hCaptureBitmap;
regards
Abhishek
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