Examples: made examples's main.cpp consistent with returning 1 on error.

Author: ocornut

docs/CHANGELOG.txt

@@ -67,6 +67,7 @@ Other Changes:
 - Examples: SDL2+DirectX11: Try WARP software driver if hardware driver is
   not available. (#5924, #5562)
 - Examples: SDL3+DirectX11: Added SDL3+DirectX11 example. (#8956, #8957) [@tomaz82]
+- Examples: made examples's main.cpp consistent with returning 1 on error.
 
 
 -----------------------------------------------------------------------

examples/example_sdl2_directx11/main.cpp

@@ -39,7 +39,7 @@ int main(int, char**)
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     // From 2.0.18: Enable native IME.
@@ -54,7 +54,7 @@ int main(int, char**)
     if (window == nullptr)
     {
         printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     SDL_SysWMinfo wmInfo;

examples/example_sdl2_metal/main.mm

@@ -51,7 +51,7 @@ int main(int, char**)
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     // Inform SDL that we will be using metal for rendering. Without this hint initialization of metal renderer may fail.

examples/example_sdl2_opengl2/main.cpp

@@ -31,7 +31,7 @@ int main(int, char**)
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     // From 2.0.18: Enable native IME.
@@ -51,7 +51,7 @@ int main(int, char**)
     if (window == nullptr)
     {
         printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     SDL_GLContext gl_context = SDL_GL_CreateContext(window);

examples/example_sdl2_opengl3/main.cpp

@@ -36,7 +36,7 @@ int main(int, char**)
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     // Decide GL+GLSL versions
@@ -85,14 +85,14 @@ int main(int, char**)
     if (window == nullptr)
     {
         printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     SDL_GLContext gl_context = SDL_GL_CreateContext(window);
     if (gl_context == nullptr)
     {
         printf("Error: SDL_GL_CreateContext(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     SDL_GL_MakeCurrent(window, gl_context);

examples/example_sdl2_sdlrenderer2/main.cpp

@@ -33,7 +33,7 @@ int main(int, char**)
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     // From 2.0.18: Enable native IME.
@@ -48,13 +48,13 @@ int main(int, char**)
     if (window == nullptr)
     {
         printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
     SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED);
     if (renderer == nullptr)
     {
         SDL_Log("Error creating SDL_Renderer!");
-        return -1;
+        return 1;
     }
     //SDL_RendererInfo info;
     //SDL_GetRendererInfo(renderer, &info);

examples/example_sdl2_vulkan/main.cpp

@@ -349,7 +349,7 @@ int main(int, char**)
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     // From 2.0.18: Enable native IME.
@@ -364,7 +364,7 @@ int main(int, char**)
     if (window == nullptr)
     {
         printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     ImVector<const char*> extensions;

examples/example_sdl3_directx11/main.cpp

@@ -34,7 +34,7 @@ int main(int, char**)
     if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_GAMEPAD))
     {
         printf("Error: SDL_Init(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     // Setup window
@@ -44,7 +44,7 @@ int main(int, char**)
     if (window == nullptr)
     {
         printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     SDL_PropertiesID props = SDL_GetWindowProperties(window);
@@ -54,7 +54,7 @@ int main(int, char**)
     if (!CreateDeviceD3D(hwnd))
     {
         CleanupDeviceD3D();
-        return -1;
+        return 1;
     }
 
     SDL_SetWindowPosition(window, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);

examples/example_sdl3_metal/main.mm

@@ -24,7 +24,7 @@ int main(int, char**)
     if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_GAMEPAD))
     {
         printf("Error: SDL_Init(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     // Create SDL window graphics context
@@ -34,19 +34,19 @@ int main(int, char**)
     if (window == nullptr)
     {
         printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
     SDL_SetWindowPosition(window, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
     SDL_ShowWindow(window);
 
     // Create Metal device _before_ creating the view/layer
-    id<MTLDevice> metalDevice = MTLCreateSystemDefaultDevice(); 
+    id<MTLDevice> metalDevice = MTLCreateSystemDefaultDevice();
     if (!metalDevice)
     {
         printf("Error: failed to create Metal device.\n");
         SDL_DestroyWindow(window);
         SDL_Quit();
-        return -1;
+        return 1;
     }
     SDL_MetalView view = SDL_Metal_CreateView(window);
     CAMetalLayer* layer = (__bridge CAMetalLayer*)SDL_Metal_GetLayer(view);
@@ -128,7 +128,7 @@ int main(int, char**)
 
             int width, height;
             SDL_GetWindowSizeInPixels(window, &width, &height);
-        
+
             layer.drawableSize = CGSizeMake(width, height);
             id<CAMetalDrawable> drawable = [layer nextDrawable];
 

examples/example_sdl3_opengl3/main.cpp

@@ -30,7 +30,7 @@ int main(int, char**)
     if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_GAMEPAD))
     {
         printf("Error: SDL_Init(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     // Decide GL+GLSL versions
@@ -74,13 +74,13 @@ int main(int, char**)
     if (window == nullptr)
     {
         printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
     SDL_GLContext gl_context = SDL_GL_CreateContext(window);
     if (gl_context == nullptr)
     {
         printf("Error: SDL_GL_CreateContext(): %s\n", SDL_GetError());
-        return -1;
+        return 1;
     }
 
     SDL_GL_MakeCurrent(window, gl_context);