How to Set Win32 Application to Full Screen (C++)

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Does anyone know how to set a Window to full screen (without the menu and title bar)? My code isn't using any .net stuff, it's all just C++ native Win32 code. I have found the answer for mobile platforms, but can't find it for normal apps.

Posted 8-Sep-10 18:32pm

weylspinor

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«_Superman_» · Accepted Answer · 2010-09-08T19:59:00

Solution 1

You have to handle the WM_GETMINMAXINFO message and then use SetWindowPos to resize the window to the size of the screen.
To get the size of the screen, use SystemParametersInfo with SPI_GETWORKAREA.
You will need to hide the menu and status bar also.

Posted 8-Sep-10 19:59pm

«_Superman_»

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weylspinor 10-Sep-10 0:29am

DWORD dwStyle = ::GetWindowLong(h_main, GWL_STYLE);
DWORD dwRemove = WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
DWORD dwNewStyle = dwStyle & ~dwRemove;
::SetWindowLong(h_main, GWL_STYLE, dwNewStyle);
::SetWindowPos(h_main, NULL, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
| SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
HDC hDC = ::GetWindowDC(NULL);
::SetWindowPos(h_main, NULL, 0, 0, ::GetDeviceCaps(hDC, HORZRES), ::GetDeviceCaps(hDC, VERTRES), SWP_FRAMECHANGED);

Thanks! Two more quick things: my menu bar is still visible, and the border is still visible as well. Is there a quick way to fix that. And how do I enable someone to Esc back to a regular maximized window?

Alain Rist · Accepted Answer · 2010-09-08T20:35:00

First, see my answer to the bolded part of the question question here:
http://www.codeproject.com/Messages/3408829/Re-Remove-Title-Bar.aspx[^]
Next move the window to the screen size:

// move to full screen (main monitor)
HDC hDC = ::GetWindowDC(NULL); 
::SetWindowPos(hWnd, NULL, 0, 0, ::GetDeviceCaps(hDC, HORZRES), ::GetDeviceCaps(hDC, VERTRES), SWP_FRAMECHANGED);

For multiple monitors handling, some homework needed :)
cheers,
AR

Reverted to original as the edit was stupid :(