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Simple test program to understow the window events in SDL2

main.cpp (text/x-csrc), 3.85 KB, created by axel mattauch on 2016-12-18 15:46:46 UTC

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Filename:

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Creator: axel mattauch

Created: 2016-12-18 15:46:46 UTC

Size: 3.85 KB

patch

obsolete

>// TEST6:   main.c
>// 18/12/2016
>// Tests SDL2: fenêtre redimmensionnable
>// ISO_C++ (C++11)
>
>#include    <cstdlib>      // entre autres pour EXIT_FAILURE, EXIT_SUCCESS
>#include    <iostream>     // Pour std::string
>#include    <sstream>      // Pour std::stringstreams
>#include    <SDL.h>
>
>void changeFenetre (SDL_Window  *  fenetre );
>
>int main( int argc, char* args[] )
>{
>   // Démarrer la SDL en mode Video & reconnaissance d'événements
>   if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_EVENTS ) < 0 )
>   {
>      return EXIT_FAILURE;
>   }
>SDL_Window  *  fenetre = SDL_CreateWindow ("ESSAI SDL",
>                                SDL_WINDOWPOS_CENTERED,
>                                SDL_WINDOWPOS_CENTERED,
>                                600 , 400 ,
>                                SDL_WINDOW_RESIZABLE );
>
>   if(fenetre == NULL)//gestion des erreurs
>   {
>       return EXIT_FAILURE;
>   }
>   SDL_Delay (1000);
>   changeFenetre (fenetre );
>
>SDL_Event evenement;
>
>bool continuer {true};
>   while (continuer)
>   {
>      SDL_PollEvent(&evenement);
>      // Analyse des evenements (s'il y en a)
>      switch (evenement.type)
>      {
>      case SDL_QUIT:
>         continuer = false;
>      break;
>
>      case SDL_WINDOWEVENT:
>         switch (evenement.window.event)
>         {
>         case SDL_WINDOWEVENT_MOVED:
>            changeFenetre (fenetre );
>            SDL_Log("Deplacement fenetre n.%d vers %d,%d",
>                    evenement.window.windowID, evenement.window.data1,
>                    evenement.window.data2);
>         break;
>
>         case SDL_WINDOWEVENT_RESIZED:
>            changeFenetre (fenetre );
>            SDL_Log("Redimensionnement fenetre n.%d a L= %dx H=%d",
>                    evenement.window.windowID, evenement.window.data1,
>                    evenement.window.data2);
>         break;
>
>         case SDL_WINDOWEVENT_SIZE_CHANGED:
>            SDL_Log("Taille fenetre n.%d a L= %dx H=%d",
>                    evenement.window.windowID, evenement.window.data1,
>                    evenement.window.data2);
>         break;
>
>         case SDL_WINDOWEVENT_ENTER:
>            SDL_Log("La souris entre dans la fenetre n.%d",
>                    evenement.window.windowID);
>         break;
>
>         case SDL_WINDOWEVENT_LEAVE:      // Semble boucler?
>            SDL_Log("La souris sort de la fenetre n.%d",
>                    evenement.window.windowID);
>         break;
>
>         case SDL_WINDOWEVENT_FOCUS_GAINED:
>            SDL_Log("La fenetre n.%d a recu le focus clavier",
>                    evenement.window.windowID);
>         break;
>
>         case SDL_WINDOWEVENT_FOCUS_LOST:
>            SDL_Log("La fenetre n.%d a perdu le focus clavier",
>                    evenement.window.windowID);
>         break;
>
>         case SDL_WINDOWEVENT_CLOSE:
>            SDL_Log("Fermeture de la fenetre n.%d", evenement.window.windowID);
>            continuer = false;
>         break;
>
>         default:
>         break;
>         }  // switch (evenement->fenetre.event)
>
>      break;
>
>      default:
>      break;
>
>      }     // switch (evenement.type)
>
>   }  // while (continuer)
>
>   // Liberer les ressources
>   SDL_Log("Fermeture de la fenetre  et sortie de SDL");
>   SDL_SetWindowTitle(fenetre , "Fermer la fenetre et la SDL");
>   SDL_Delay (500);
>   SDL_DestroyWindow(fenetre);
>   SDL_Quit();
>
>   return EXIT_SUCCESS;
>}
>
>
>void changeFenetre (SDL_Window  *  fenetre )
>{
>std::basic_ostringstream<char> tampon;
>int   x;
>int   y;
>int   dx;
>int   dy;
>
>   SDL_GetWindowPosition(fenetre, &x, &y);
>   tampon << " X: " << std::dec << x << " Y: "  << y;
>
>   SDL_GetWindowSize(fenetre, &dx, &dy );
>   tampon << " dX: " << std::dec << dx << " dY: "  << dy;
>
>   // .str permet d'acceder à la string, .cstr() à la chaine de char
>   SDL_SetWindowTitle(fenetre , tampon.str().c_str());
>
>   return;
>}

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We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.