Create popupmenu.c

menus/popupmenu.c

@@ -0,0 +1,84 @@
+#include <windows.h>
+
+LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
+
+#define IDM_FILE_NEW 1
+#define IDM_FILE_OPEN 2
+#define IDM_FILE_QUIT 3
+
+
+int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
+                    PWSTR lpCmdLine, int nCmdShow) {
+    MSG  msg;    
+    WNDCLASSW wc = {0};
+    wc.lpszClassName = L"Popup menu";
+    wc.hInstance     = hInstance;
+    wc.hbrBackground = GetSysColorBrush(COLOR_3DFACE);
+    wc.lpfnWndProc   = WndProc;
+    wc.hCursor       = LoadCursor(0, IDC_ARROW);
+
+    RegisterClassW(&wc);
+    CreateWindowW(wc.lpszClassName, L"Popup menu",
+                  WS_OVERLAPPEDWINDOW | WS_VISIBLE,
+                  100, 100, 350, 250, 0, 0, hInstance, 0);
+
+    while (GetMessage(&msg, NULL, 0, 0)) {
+    
+        TranslateMessage(&msg);
+        DispatchMessage(&msg);
+    }
+
+    return (int) msg.wParam;
+}
+
+LRESULT CALLBACK WndProc(HWND hwnd, UINT msg,
+    WPARAM wParam, LPARAM lParam) {
+    
+    HMENU hMenu;
+    POINT point;
+
+    switch(msg) {
+  
+      case WM_COMMAND:
+    
+          switch(LOWORD(wParam)) {
+        
+              case IDM_FILE_NEW:
+              case IDM_FILE_OPEN:
+            
+                  MessageBeep(MB_ICONINFORMATION);
+                  break;
+                
+              case IDM_FILE_QUIT:
+            
+                  SendMessage(hwnd, WM_CLOSE, 0, 0);
+                  break;
+          }
+        
+          break;
+
+      case WM_RBUTTONUP:
+     
+          point.x = LOWORD(lParam);
+          point.y = HIWORD(lParam);
+        
+          hMenu = CreatePopupMenu();
+          ClientToScreen(hwnd, &point);
+
+          AppendMenuW(hMenu, MF_STRING, IDM_FILE_NEW, L"&New");
+          AppendMenuW(hMenu, MF_STRING, IDM_FILE_OPEN, L"&Open");
+          AppendMenuW(hMenu, MF_SEPARATOR, 0, NULL);
+          AppendMenuW(hMenu, MF_STRING, IDM_FILE_QUIT, L"&Quit");
+                    
+          TrackPopupMenu(hMenu, TPM_RIGHTBUTTON, point.x, point.y, 0, hwnd, NULL);
+          DestroyMenu(hMenu);
+          break;
+
+      case WM_DESTROY:
+     
+          PostQuitMessage(0);
+          break;
+    }
+
+    return DefWindowProcW(hwnd, msg, wParam, lParam);
+}