#include <windows.h>LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);#define IDM_FILE_NEW 1#define IDM_FILE_OPEN 2#define IDM_FILE_QUIT 3int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR lpCmdLine, int nCmdShow){ MSG msg; WNDCLASSW wc = {0}; wc.lpszClassName = L"Application"; 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, 200, 150, 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)) { // 在WM_COMMAND中 wParam的低字段是子窗口ID case IDM_FILE_NEW: case IDM_FILE_OPEN: Beep(50, 100); break; case IDM_FILE_QUIT: SendMessage(hwnd, WM_CLOSE, 0, 0); break; } break; case WM_RBUTTONUP: //鼠标右键释放时产生此消息//lParam的低字段和高字段分别是相对于客户区左上角的x,y坐标 point.x = LOWORD(lParam);// point.y = HIWORD(lParam); hMenu = CreatePopupMenu();//创建菜单 ClientToScreen(hwnd, &point); //转换客户区坐标到屏幕坐标 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);//在指定的x,y点生成右键菜单 DestroyMenu(hMenu);//由于菜单hMenu没有附着于任何窗口,应该显性销毁. break; case WM_DESTROY: PostQuitMessage(0); break; } return DefWindowProcW(hwnd, msg, wParam, lParam);}
