CODEWITHSUNDEEP
c#winapisdlsdl.net
gingerbreadboy
gingerbreadboy

Reputation: 7769

moving SDL video surface

Does anyone know how to move my SDL.net video surface around the screen programtically?

Surface videoContext = Video.SetVideoMode(1024, 768, 32, false, false, false, true, true);

var a = System.Windows.Forms.Control.FromHandle(Video.WindowHandle);
var b = System.Windows.Forms.NativeWindow.FromHandle(Video.WindowHandle);

I can't find any properties in Surface or Video which do the job, and FromHandle is returning Null.

The window is initializing falling off the bottom of the screen. alt text

Any ideas?

Update:

I've seen this code but can't work out an equivilent C# implimentation. Can anyone help? 

#ifdef WIN32
#include <SDL_syswm.h>
SDL_SysWMinfo i;
SDL_VERSION( &i.version );
if ( SDL_GetWMInfo ( &i) ) {
  HWND hwnd = i.window;
  SetWindowPos( hwnd, HWND_TOP, x, y, width, height, flags );
}

Failing that, how much work is involved in including some c++ in my c# project?

Thanks.

Upvotes: 5

Views: 1359

Answers (2)

Hans Passant
Hans Passant

Reputation: 941307

You'll need these declarations:

    private static IntPtr HWND_TOP = IntPtr.Zero;
    private static int SWP_FLAGS = 0x004 | 0x0010;
    [System.Runtime.InteropServices.DllImport("user32.dll")]
    private static extern bool SetWindowPos(IntPtr hWnd, IntPtr after, int x, int y, int width, int height, int flags);

Usage:

    SetWindowPos(Video.WindowHandle, HWND_TOP, x, y, width, height, SWP_FLAGS);

where x and y are in screen coordinates. Use Control.PointToScreen() if necessary.

Upvotes: 4

Adam Maras
Adam Maras

Reputation: 26853

Judging by the C++ code you've found, you could P/Invoke the Win32 SetWindowPos function and pass the Video.WindowHandle handle (as well as your size and position parameters) since there doesn't appear to be a solution provided by .NET.

Upvotes: 3

Related Questions