Examples: MSVC: increase warning level from /W3 to /W4 for OpenGL examples

examples/directx11_example/main.cpp

@@ -128,11 +128,8 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
     return DefWindowProc(hWnd, msg, wParam, lParam);
 }
 
-int main(int argc, char** argv)
+int main(int, char**)
 {
-    (void)argc;
-    (void)argv;
-
     // Create application window
     WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, L"ImGui Example", NULL };
     RegisterClassEx(&wc);

examples/directx9_example/main.cpp

@@ -41,11 +41,8 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
     return DefWindowProc(hWnd, msg, wParam, lParam);
 }
 
-int main(int argc, char** argv)
+int main(int, char**)
 {
-    (void)argc;
-    (void)argv;
-
     // Create application window
     WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, L"ImGui Example", NULL };
     RegisterClassEx(&wc);

examples/libs/gl3w/GL/gl3w.c

@@ -1,5 +1,10 @@
 #include <GL/gl3w.h>
 
+#ifdef _MSC_VER
+#pragma warning (disable: 4055) // warning C4055: 'type cast' : from data pointer 'void *' to function pointer
+#pragma warning (disable: 4152) // warning C4152: nonstandard extension, function/data pointer conversion in expression
+#endif
+
 #ifdef _WIN32
 #define WIN32_LEAN_AND_MEAN 1
 #include <windows.h>

examples/opengl3_example/imgui_impl_glfw_gl3.cpp

@@ -123,18 +123,18 @@ static void ImGui_ImplGlfwGL3_SetClipboardText(const char* text)
     glfwSetClipboardString(g_Window, text);
 }
 
-void ImGui_ImplGlfwGL3_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
+void ImGui_ImplGlfwGL3_MouseButtonCallback(GLFWwindow*, int button, int action, int /*mods*/)
 {
     if (action == GLFW_PRESS && button >= 0 && button < 3)
         g_MousePressed[button] = true;
 }
 
-void ImGui_ImplGlfwGL3_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset)
+void ImGui_ImplGlfwGL3_ScrollCallback(GLFWwindow*, double /*xoffset*/, double yoffset)
 {
     g_MouseWheel += (float)yoffset; // Use fractional mouse wheel, 1.0 unit 5 lines.
 }
 
-void ImGui_ImplGlfwGL3_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
+void ImGui_ImplGlfwGL3_KeyCallback(GLFWwindow*, int key, int, int action, int mods)
 {
     ImGuiIO& io = ImGui::GetIO();
     if (action == GLFW_PRESS)
@@ -146,7 +146,7 @@ void ImGui_ImplGlfwGL3_KeyCallback(GLFWwindow* window, int key, int scancode, in
     io.KeyAlt = (mods & GLFW_MOD_ALT) != 0;
 }
 
-void ImGui_ImplGlfwGL3_CharCallback(GLFWwindow* window, unsigned int c)
+void ImGui_ImplGlfwGL3_CharCallback(GLFWwindow*, unsigned int c)
 {
     ImGuiIO& io = ImGui::GetIO();
     if (c > 0 && c < 0x10000)

examples/opengl3_example/main.cpp

@@ -8,10 +8,10 @@
 
 static void error_callback(int error, const char* description)
 {
-    fprintf(stderr, "Error: %s\n", description);
+    fprintf(stderr, "Error %d: %s\n", error, description);
 }
 
-int main(int argc, char** argv)
+int main(int, char**)
 {
     // Setup window
     glfwSetErrorCallback(error_callback);

examples/opengl3_example/opengl3_example.vcxproj

@@ -83,7 +83,7 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
@@ -97,7 +97,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
@@ -111,7 +111,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
@@ -130,7 +130,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>

examples/opengl_example/imgui_impl_glfw.cpp

@@ -103,18 +103,18 @@ static void ImGui_ImplGlfw_SetClipboardText(const char* text)
     glfwSetClipboardString(g_Window, text);
 }
 
-void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
+void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow*, int button, int action, int /*mods*/)
 {
     if (action == GLFW_PRESS && button >= 0 && button < 3)
         g_MousePressed[button] = true;
 }
 
-void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset)
+void ImGui_ImplGlfw_ScrollCallback(GLFWwindow*, double /*xoffset*/, double yoffset)
 {
     g_MouseWheel += (float)yoffset; // Use fractional mouse wheel, 1.0 unit 5 lines.
 }
 
-void ImGui_ImplGlFw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
+void ImGui_ImplGlFw_KeyCallback(GLFWwindow*, int key, int, int action, int mods)
 {
     ImGuiIO& io = ImGui::GetIO();
     if (action == GLFW_PRESS)
@@ -126,7 +126,7 @@ void ImGui_ImplGlFw_KeyCallback(GLFWwindow* window, int key, int scancode, int a
     io.KeyAlt = (mods & GLFW_MOD_ALT) != 0;
 }
 
-void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c)
+void ImGui_ImplGlfw_CharCallback(GLFWwindow*, unsigned int c)
 {
     ImGuiIO& io = ImGui::GetIO();
     if (c > 0 && c < 0x10000)

examples/opengl_example/main.cpp

@@ -7,10 +7,10 @@
 
 static void error_callback(int error, const char* description)
 {
-    fprintf(stderr, "Error: %s\n", description);
+    fprintf(stderr, "Error %d: %s\n", error, description);
 }
 
-int main(int argc, char** argv)
+int main(int, char**)
 {
     // Setup window
     glfwSetErrorCallback(error_callback);

examples/opengl_example/opengl_example.vcxproj

@@ -83,7 +83,7 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
@@ -97,7 +97,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
@@ -111,7 +111,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
@@ -130,7 +130,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>