gadgets.c

Programming Windows 程序开发设计指南

/*-----------------------------------------
   GADGETS.C -- Gadgets for a frame window.
                 (c) Paul Yao, 1996
  -----------------------------------------*/
#include <windows.h>
#include <windowsx.h>
#include <commctrl.h>
#include "comcthlp.h"
#include "gadgets.h"

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
LRESULT CALLBACK ClientWndProc (HWND, UINT, WPARAM, LPARAM) ;

char szAppName[]  = "Gadgets" ;
BOOL bIgnoreSize = FALSE ;
HINSTANCE hInst ;
HWND hwndClient = NULL ;
HWND hwndToolBar = NULL ;
HWND hwndStatusBar = NULL ;
HWND hwndNotify = NULL ;

extern DWORD dwToolBarStyles ;
extern BOOL bStrings ;
extern BOOL bLargeIcons ;
extern BOOL bComboBox ;
extern DWORD dwStatusBarStyles ;
extern int cyToolBar ;

//-------------------------------------------------------------------
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, 
                    PSTR lpszCmdLine, int cmdShow)       
     {
     HWND        hwnd ;
     MSG         msg ;
     WNDCLASSEX  wc ;

     hInst = hInstance ;

	 wc.cbSize        = sizeof (wc) ;
     wc.lpszClassName = szAppName ;
     wc.hInstance     = hInstance ;
     wc.lpfnWndProc   = WndProc ;
     wc.hCursor       = LoadCursor (NULL, IDC_ARROW) ;
     wc.hIcon         = LoadIcon (hInst, MAKEINTRESOURCE (IDI_APP)) ;
     wc.lpszMenuName  = "MAIN" ;
     wc.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1);
     wc.style         = 0 ;
     wc.cbClsExtra    = 0 ;
     wc.cbWndExtra    = 0 ;
	 wc.hIconSm       = LoadIcon (hInst, MAKEINTRESOURCE (IDI_APP)) ;

     RegisterClassEx (&wc) ;

     wc.lpszClassName = "ClientWndProc" ;
     wc.hInstance     = hInstance ;
     wc.lpfnWndProc   = ClientWndProc ;
     wc.hCursor       = LoadCursor (NULL, IDC_ARROW) ;
     wc.hIcon         = LoadIcon (NULL, IDI_APPLICATION) ;
     wc.lpszMenuName  = NULL ;
     wc.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1) ;
     wc.style         = 0 ;
     wc.cbClsExtra    = 0 ;
     wc.cbWndExtra    = 0 ;
	 wc.hIconSm       = LoadIcon (NULL, IDI_APPLICATION) ;

     RegisterClassEx (&wc) ;

     hwnd = CreateWindowEx(0L,
                           szAppName, szAppName,
                           WS_OVERLAPPEDWINDOW,  
                           CW_USEDEFAULT, CW_USEDEFAULT,
                           CW_USEDEFAULT, CW_USEDEFAULT,
                           NULL, NULL, hInstance, NULL) ;
     ShowWindow (hwnd, cmdShow) ;
     UpdateWindow (hwnd) ;

     InitCommonControls () ;

     while (GetMessage (&msg, NULL, 0, 0))
          {
          TranslateMessage (&msg) ; 
          DispatchMessage (&msg) ;  
          }
     return msg.wParam ;
     }

//-------------------------------------------------------------------
void MenuCheckMark (HMENU hmenu, int id, BOOL bCheck)
     {
     int iState ;
     iState = (bCheck) ? MF_CHECKED : MF_UNCHECKED ;
     CheckMenuItem (hmenu, id, iState) ;
     }

//-------------------------------------------------------------------
LRESULT CALLBACK
WndProc (HWND hwnd, UINT mMsg, WPARAM wParam, LPARAM lParam) 
     {
     switch (mMsg)
          {
          case WM_CREATE :
               {
               // Create toolbar (source resides in toolbar.c).
               hwndToolBar = InitToolBar (hwnd) ;

               // Create status bar (source resides in statbar.c).
               hwndStatusBar = InitStatusBar (hwnd) ;

               // Create client window (contains notify list).
               hwndClient = CreateWindowEx (WS_EX_CLIENTEDGE,
                                 "ClientWndProc", NULL,
                                 WS_CHILD | WS_VISIBLE, 0, 0, 0, 0,
                                 hwnd, (HMENU) 4, hInst, NULL) ;

               return 0 ;
               }

          case WM_COMMAND :
               {
               // Toolbar button commands.
               if (LOWORD (wParam) < 300)
                    {
                    char ach[80] ;
                    wsprintf (ach, "Got Command (%d)", wParam) ;
                    MessageBox (hwnd, ach, szAppName, MB_OK) ;
                    break ;
                    }

               // Menu item commands
               switch (LOWORD (wParam))
                    {
                    // Toolbar settings
                    case IDM_STRINGS :
                    case IDM_LARGEICONS :
                    case IDM_SMALLICONS :
                    case IDM_NODIVIDER :
                    case IDM_WRAPABLE :
                    case IDM_TOP :
                    case IDM_BOTTOM :
                    case IDM_NOMOVEY :
                    case IDM_NOPARENTALIGN :
                    case IDM_NORESIZE :
                    case IDM_ADJUSTABLE :
                    case IDM_ALTDRAG :
                    case IDM_TOOLTIPS :
                    case IDM_COMBOBOX :
                         DestroyWindow (hwndToolBar) ;
                         hwndToolBar = RebuildToolBar (hwnd, 
                                                       LOWORD (wParam)) ;
                         break ;

                    // Toolbar messages
                    case IDM_TB_CHECK :
                    case IDM_TB_ENABLE :
                    case IDM_TB_HIDE :
                    case IDM_TB_INDETERMINATE :
                    case IDM_TB_PRESS :
                    case IDM_TB_BUTTONCOUNT :
                    case IDM_TB_GETROWS :
                    case IDM_TB_CUSTOMIZE :
                         ToolBarMessage (hwndToolBar, LOWORD (wParam)) ;
                         break ;

                    // Status bar settings
                    case IDM_STAT_SIZEGRIP :
                    case IDM_STAT_TOP :
                    case IDM_STAT_BOTTOM :
                    case IDM_STAT_NOMOVEY :
                    case IDM_STAT_NOPARENTALIGN :
                    case IDM_STAT_NORESIZE :
                         DestroyWindow (hwndStatusBar) ;
                         hwndStatusBar = RebuildStatusBar (hwnd,
                                                           LOWORD (wParam)) ;
                         break ;
                      
                    // Status bar messages
                    case IDM_ST_GETBORDERS :
                    case IDM_ST_GETPARTS :
                    case IDM_ST_SETTEXT :
                    case IDM_ST_SIMPLE :
                         StatusBarMessage (hwndStatusBar, LOWORD (wParam)) ;
                         break ;

                    // Toggle display of toolbar
                    case IDM_VIEW_TOOLBAR :
                         {
                         RECT r ;

                         if (hwndToolBar && IsWindowVisible (hwndToolBar))
                              {
                              ShowWindow (hwndToolBar, SW_HIDE) ;
                              }
                         else
                              {
                              ShowWindow (hwndToolBar, SW_SHOW) ;
                              }

                         // Resize other windows.
                         GetClientRect (hwnd, &r) ;
                         PostMessage (hwnd, WM_SIZE, 0, 
                                      MAKELPARAM (r.right, r.bottom)) ;

                         break;
                         }

                    // Toggle display of status bar
                    case IDM_VIEW_STATUS :
                         {
                         RECT r;

                         if (hwndStatusBar && IsWindowVisible (hwndStatusBar))
                              {
                              ShowWindow (hwndStatusBar, SW_HIDE) ;
                              }
                         else
                              {
                              ShowWindow (hwndStatusBar, SW_SHOW) ;
                              }

                         // Resize other windows.
                         GetClientRect (hwnd, &r) ;
                         PostMessage (hwnd, WM_SIZE, 0, 
                                      MAKELPARAM (r.right, r.bottom)) ;

                         break;
                         }

                    // Toggle display of notifications window.
                    case IDM_VIEW_NOTIFICATIONS :
                         hwndNotify = ViewNotificationsToggle (hwndClient) ;
                         break ;

                    // Toggle ignore WM_SIZE to show auto-size/auto-move
                    case IDM_IGNORESIZE :
                    case IDM_STAT_IGNORESIZE :
                         {
                         RECT r ;

                         bIgnoreSize = !bIgnoreSize ;
                         if (bIgnoreSize)
                              {