Re: [paragui-users] draw an object on screen - HOW?

[Alexander Pipelka]

All drawing operations for your widget should be done in "eventBlit".
Just override the virtual eventBlit function. Everything else should
happen automatically.

Alex

Am Mon, 2003-06-30 um 09.01 schrieb Michael Lüftenegger:
> Hi,
> 
> thanks for your answer, but it doesn't work, i tried it. I have no idea why?
> 
> misch
> 
> 
> ----- Original Message ----- 
> From: "Ulf Lorenz" <address@hidden>
> To: <address@hidden>
> Sent: Sunday, June 29, 2003 10:14 PM
> Subject: Re: [paragui-users] draw an object on screen - HOW?
> 
> 
> On Fri, Jun 27, 2003 at 11:12:39PM +0200, Michael Lüftenegger wrote:
> > <---------------------------------- code beginn>
> > #include "SDL\SDL.h"
> > #include "pgapplication.h"
> > #include "pgbutton.h"
> >
> > class gol{
> > public:
> >     PG_Widget *screen;
> >
> >     gol(){
> >         screen = NULL;
> >     }
> >
> >     void mydraw(){
> >         Uint8 R =255;
> >         // SHOULD DRAW A RECT_OBJECT, BUT IT DOESN'T WORK!!
> >         // WHY??
> >         screen->DrawRectWH (10,10,100,100,R,R,R);
> >         screen->Update();
> You aren't missing a "screen->Show()", are you?
> 
> >     }
> > };
> >
> > // Eventhandler
> >     // Button_step
> >         PARAGUI_CALLBACK(step_handler) {
> >             gol *app = (gol*) clientdata;
> >             app->mydraw();
> >             return true;
> >         }
> >
> > int main(int argc, char* argv[]) {
> >     PG_Application app;
> >     app.LoadTheme("default");
> >     app.InitScreen(800, 600, 16, SDL_SWSURFACE);
> >     app.SetEmergencyQuit(true);
> >     // WIDGET TO DRAW IN.
> >         PG_Widget mywid(NULL,PG_Rect(10,35,600,360));
> >     // gol
> >         gol mygol;
> >         mygol.screen = &mywid;
> >     // Button start/stop
> >         PG_Button B_start_stop(NULL, 1,PG_Rect(650, 35, 100, 30),"step");
> >         B_start_stop.SetEventCallback(MSG_BUTTONCLICK, step_handler,
> &mygol);
> >         B_start_stop.Show();
> >         app.Run();
> >         return 0;
> > }
> > <---------------------------------- code end>
> 
> Ulf