WPF

BOOL bRet;

while( (bRet = GetMessage( &msg, hWnd, 0, 0 )) != 0)
{ 
    if (bRet == -1)
    {
        // handle the error and possibly exit
    }
    else
    {
        TranslateMessage(&msg); 
        DispatchMessage(&msg); 
    }
}

public class Application {
    private void Run() {

        // What code has Microsoft put here?

    }
}

GregJ7 wrote:

// What code has Microsoft put here?

public int Run()
{
    EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordGeneral | EventTrace.Keyword.KeywordPerf, EventTrace.Event.WClientAppRun);
    return this.Run(null);
}

public int Run(Window window)
{
    VerifyAccess();
    
    //
    // Browser hosted app should not explictly call App.Run(). We need to filter out those
    // calls here
    //
    if (InBrowserHostedApp())
    {
        throw new InvalidOperationException(SR.Get(SRID.CannotCallRunFromBrowserHostedApp));
    }
    else
    {
        return RunInternal(window);
    }
}

while(frame.Continue)
{
    if (!GetMessage(ref msg, IntPtr.Zero, 0, 0))
        break;

    TranslateAndDispatchMessage(ref msg);
}