Witch windows message allways trigger's?

[PacR]

Hello i want to display image over and over agian witch one of WM_ to use?

My Code:

#include <windows.h>

//...

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch(msg)
    {
        case WM_CLOSE:
            DestroyWindow(hwnd);
        break;
        case WM_DESTROY:
            PostQuitMessage(0);
        break;
        case WM_ALWAYSTRIGGER: //I want this.
            DrawImage("test.bmp",100,100);
        break;
        default:
            return DefWindowProc(hwnd, msg, wParam, lParam);
    }
    return 0;
}

//... 

Thank you for your help.

[Thomas1965]

You can use SetTimer and WM_TIMER