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- /*----------------------------------------
- POPMENU.C -- Popup Menu Demonstration
- (c) Charles Petzold, 1998
- ----------------------------------------*/
-
- #include <windows.h>
- #include "resource.h"
-
- LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
-
- HINSTANCE hInst ;
- TCHAR szAppName[] = TEXT ("PopMenu") ;
-
- int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
- PSTR szCmdLine, int iCmdShow)
- {
- HWND hwnd ;
- MSG msg ;
- WNDCLASS wndclass ;
-
- wndclass.style = CS_HREDRAW | CS_VREDRAW ;
- wndclass.lpfnWndProc = WndProc ;
- wndclass.cbClsExtra = 0 ;
- wndclass.cbWndExtra = 0 ;
- wndclass.hInstance = hInstance ;
- wndclass.hIcon = LoadIcon (NULL, szAppName) ;
- wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
- wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
- wndclass.lpszMenuName = NULL ;
- wndclass.lpszClassName = szAppName ;
-
- if (!RegisterClass (&wndclass))
- {
- MessageBox (NULL, TEXT ("This program requires Windows NT!"),
- szAppName, MB_ICONERROR) ;
- return 0 ;
- }
-
- hInst = hInstance ;
-
- hwnd = CreateWindow (szAppName, TEXT ("Popup Menu Demonstration"),
- WS_OVERLAPPEDWINDOW,
- CW_USEDEFAULT, CW_USEDEFAULT,
- CW_USEDEFAULT, CW_USEDEFAULT,
- NULL, NULL, hInstance, NULL) ;
-
- ShowWindow (hwnd, iCmdShow) ;
- UpdateWindow (hwnd) ;
-
- while (GetMessage (&msg, NULL, 0, 0))
- {
- TranslateMessage (&msg) ;
- DispatchMessage (&msg) ;
- }
- return msg.wParam ;
- }
-
- LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
- {
- static HMENU hMenu ;
- static int idColor [5] = { WHITE_BRUSH, LTGRAY_BRUSH, GRAY_BRUSH,
- DKGRAY_BRUSH, BLACK_BRUSH } ;
- static int iSelection = IDM_BKGND_WHITE ;
- POINT point ;
-
- switch (message)
- {
- case WM_CREATE:
- hMenu = LoadMenu (hInst, szAppName) ;
- hMenu = GetSubMenu (hMenu, 0) ;
- return 0 ;
-
- case WM_RBUTTONUP:
- point.x = LOWORD (lParam) ;
- point.y = HIWORD (lParam) ;
- ClientToScreen (hwnd, &point) ;
-
- TrackPopupMenu (hMenu, TPM_RIGHTBUTTON, point.x, point.y,
- 0, hwnd, NULL) ;
- return 0 ;
-
- case WM_COMMAND:
- switch (LOWORD (wParam))
- {
- case IDM_FILE_NEW:
- case IDM_FILE_OPEN:
- case IDM_FILE_SAVE:
- case IDM_FILE_SAVE_AS:
- case IDM_EDIT_UNDO:
- case IDM_EDIT_CUT:
- case IDM_EDIT_COPY:
- case IDM_EDIT_PASTE:
- case IDM_EDIT_CLEAR:
- MessageBeep (0) ;
- return 0 ;
-
- case IDM_BKGND_WHITE: // Note: Logic below
- case IDM_BKGND_LTGRAY: // assumes that IDM_WHITE
- case IDM_BKGND_GRAY: // through IDM_BLACK are
- case IDM_BKGND_DKGRAY: // consecutive numbers in
- case IDM_BKGND_BLACK: // the order shown here.
-
- CheckMenuItem (hMenu, iSelection, MF_UNCHECKED) ;
- iSelection = LOWORD (wParam) ;
- CheckMenuItem (hMenu, iSelection, MF_CHECKED) ;
-
- SetClassLong (hwnd, GCL_HBRBACKGROUND, (LONG)
- GetStockObject
- (idColor [LOWORD (wParam) - IDM_BKGND_WHITE])) ;
-
- InvalidateRect (hwnd, NULL, TRUE) ;
- return 0 ;
-
- case IDM_APP_ABOUT:
- MessageBox (hwnd, TEXT ("Popup Menu Demonstration Program\n")
- TEXT ("(c) Charles Petzold, 1998"),
- szAppName, MB_ICONINFORMATION | MB_OK) ;
- return 0 ;
-
- case IDM_APP_EXIT:
- SendMessage (hwnd, WM_CLOSE, 0, 0) ;
- return 0 ;
-
- case IDM_APP_HELP:
- MessageBox (hwnd, TEXT ("Help not yet implemented!"),
- szAppName, MB_ICONEXCLAMATION | MB_OK) ;
- return 0 ;
- }
- break ;
-
- case WM_DESTROY:
- PostQuitMessage (0) ;
- return 0 ;
- }
- return DefWindowProc (hwnd, message, wParam, lParam) ;
- }
-