Add decoration option to multi-window test

tests/CMakeLists.txt

@@ -34,7 +34,7 @@ add_executable(sharing WIN32 MACOSX_BUNDLE sharing.c ${GLAD})
 add_executable(tearing WIN32 MACOSX_BUNDLE tearing.c ${GETOPT} ${GLAD})
 add_executable(threads WIN32 MACOSX_BUNDLE threads.c ${TINYCTHREAD} ${GLAD})
 add_executable(title WIN32 MACOSX_BUNDLE title.c ${GLAD})
-add_executable(windows WIN32 MACOSX_BUNDLE windows.c ${GLAD})
+add_executable(windows WIN32 MACOSX_BUNDLE windows.c ${GETOPT} ${GLAD})
 
 target_link_libraries(empty "${CMAKE_THREAD_LIBS_INIT}" "${RT_LIBRARY}")
 target_link_libraries(threads "${CMAKE_THREAD_LIBS_INIT}" "${RT_LIBRARY}")

tests/windows.c

@@ -33,6 +33,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "getopt.h"
+
 static const char* titles[] =
 {
     "Red",
@@ -52,6 +54,14 @@ static const struct
     { 0.98f, 0.74f, 0.04f }
 };
 
+static void usage(void)
+{
+    printf("Usage: windows [-h] [-b]\n");
+    printf("Options:\n");
+    printf("  -b create decorated windows\n");
+    printf("  -h show this help\n");
+}
+
 static void error_callback(int error, const char* description)
 {
     fprintf(stderr, "Error: %s\n", description);
@@ -80,16 +90,33 @@ static void key_callback(GLFWwindow* window, int key, int scancode, int action,
 
 int main(int argc, char** argv)
 {
-    int i;
+    int i, ch;
+    int decorated = GLFW_FALSE;
     int running = GLFW_TRUE;
     GLFWwindow* windows[4];
 
+    while ((ch = getopt(argc, argv, "bh")) != -1)
+    {
+        switch (ch)
+        {
+            case 'b':
+                decorated = GLFW_TRUE;
+                break;
+            case 'h':
+                usage();
+                exit(EXIT_SUCCESS);
+            default:
+                usage();
+                exit(EXIT_FAILURE);
+        }
+    }
+
     glfwSetErrorCallback(error_callback);
 
     if (!glfwInit())
         exit(EXIT_FAILURE);
 
-    glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);
+    glfwWindowHint(GLFW_DECORATED, decorated);
     glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
 
     for (i = 0;  i < 4;  i++)