I resolved this after about a month of tinkering with the Api.
Apparently the popup menus are top level windows too. My frame drawing code
was calling AG_WindowDraw() only for windows I explicitely created via
AG_WindowNew. When I changed the window drawing code to:
AG_FOREACH_WINDOW(win, agDriverSw) {
AG_WindowDraw(win);
}
It just magically included the popups too.
Cheers,
Nenad
On Mon, May 21, 2012 at 4:58 AM, nenad jalsovec <[email protected]>wrote:
> Hello,
>
> I'm considering to use Agar for GUI on top of my SDL/OpenGL
> application. I've been playing around with it for couple of days and
> it looks neat overly but I exeprienced some quirks.
>
> Below is a minimal code example that compiles on windows with VC 2008.
> The problem is that menu sub-item doesn't show up when I click on the
> main menu item. However, the same menu setup works as intended when
> using default event loop via AG_EventLoop() and without any SDL or GL
> code.
>
> I'm not sure I'm doing everything right as there are no code examples
> for the case of custom loop with GL+SDL
> If anybody has had experience with this, please shed some light.
>
>
> Thanks,
>
> Nenad
>
>
>
> #include <windows.h>
> #include <gl/gl.h>
> #include "SDL.h"
> #include <agar/core.h>
> #include <agar/gui.h>
>
> int main(int argc, char **argv){
>
> // init sdl
> if( SDL_Init(SDL_INIT_EVERYTHING) < 0 ){
> exit(1);
> }
> if( ! SDL_SetVideoMode( 640, 480, 32, SDL_HWSURFACE |
> SDL_DOUBLEBUF |
> SDL_OPENGL ) ){
> exit(1);
> }
>
> // init agar
> if( AG_InitCore( "SDL+OGL+AGAR", 0) == -1 ){
> exit(1);
> }
> AG_InitVideoSDL( SDL_GetVideoSurface(), AG_VIDEO_OVERLAY);
>
> // create agar window
> AG_Window * win = AG_WindowNew( 0 );
> AG_LabelNew( win, 0, "Hello, world!");
> AG_WindowShow( win );
>
> // crate a menu with one sub-node
> AG_Menu *menu = AG_MenuNew(win, 0);
> AG_MenuItem *item = AG_MenuNode(menu->root, "Menu", NULL);
> AG_MenuNode(item, "Node", NULL);
>
> // main loop
> bool loop = true;
> SDL_Event e;
> while( loop ){
> while( SDL_PollEvent( &e )){
> // pass the events to agar
> AG_DriverEvent dev;
> AG_SDL_TranslateEvent( agDriverSw, & e, &dev );
> AG_ProcessEvent(NULL, &dev);
> }
>
> // some opengl code
> glClearColor(0.4, 0.5, 0.4, 1.0);
> glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>
> // draw the agar window
> if (agDriverSw){
> AG_BeginRendering(agDriverSw);
> AG_WindowDraw(win);
> AG_EndRendering(agDriverSw);
> }
>
> SDL_GL_SwapBuffers();
> }
>
> return 0;
> }
>
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