samples/dll/sdk_exe.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        samples/dll/my_exe.cpp
   3 // Purpose:     Sample showing how to use wx DLL from a Win32 application
   4 // Author:      Vadim Zeitlin
   5 // Created:     2009-12-07
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 /*
  12     This program is intentionally as simple as possible and shouldn't be seen
  13     as an example of how to write a proper Win32 application (why should you
  14     want to do this anyhow when you have wxWidgets). It's just a test bed for
  15     the wx DLL which it uses.
  16  */
  17
  18 // ============================================================================
  19 // declarations
  20 // ============================================================================
  21
  22 // ----------------------------------------------------------------------------
  23 // headers
  24 // ----------------------------------------------------------------------------
  25
  26 #include <windows.h>
  27 #include <windowsx.h>
  28
  29 #include <stdio.h>
  30 #include <tchar.h>
  31
  32 #include "my_dll.h"
  33
  34 namespace
  35 {
  36
  37 // ----------------------------------------------------------------------------
  38 // constants
  39 // ----------------------------------------------------------------------------
  40
  41 const TCHAR *MAIN_WIN_CLASS_NAME = _TEXT("my_exe_main_win_class");
  42
  43 const int IDB_RUN_GUI_FROM_DLL = 100;
  44
  45 // ----------------------------------------------------------------------------
  46 // globals
  47 // ----------------------------------------------------------------------------
  48
  49 HINSTANCE g_hInstance;
  50 HWND g_hwndMain;
  51
  52 // ============================================================================
  53 // implementation
  54 // ============================================================================
  55
  56 // ----------------------------------------------------------------------------
  57 // callbacks
  58 // ----------------------------------------------------------------------------
  59
  60 void
  61 OnCommand(HWND /* hwnd */, int id, HWND /* hwndCtl */, UINT /* codeNotify */)
  62 {
  63     if ( id == IDB_RUN_GUI_FROM_DLL )
  64     {
  65         run_wx_gui_from_dll("child instance");
  66     }
  67 }
  68
  69 void OnDestroy(HWND hwnd)
  70 {
  71     wx_dll_cleanup();
  72
  73     PostQuitMessage(0);
  74 }
  75
  76 LRESULT CALLBACK MainWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
  77 {
  78     switch ( msg )
  79     {
  80         HANDLE_MSG(hwnd, WM_COMMAND, OnCommand);
  81         HANDLE_MSG(hwnd, WM_DESTROY, OnDestroy);
  82
  83         default:
  84             return DefWindowProc(hwnd, msg, wParam, lParam);
  85     }
  86
  87     return 0;
  88 }
  89
  90 // ----------------------------------------------------------------------------
  91 // initialization functions
  92 // ----------------------------------------------------------------------------
  93
  94 bool RegisterMainClass()
  95 {
  96     WNDCLASS wc;
  97     ZeroMemory(&wc, sizeof(wc));
  98     wc.style         = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
  99     wc.lpfnWndProc   = MainWndProc;
 100     wc.hInstance     = g_hInstance;
 101     wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
 102     wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
 103     wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 104     wc.lpszClassName = MAIN_WIN_CLASS_NAME;
 105
 106     return RegisterClass(&wc) != 0;
 107 }
 108
 109 bool CreateMainWindow()
 110 {
 111     g_hwndMain = CreateWindow
 112                  (
 113                     MAIN_WIN_CLASS_NAME,
 114                     _TEXT("Main Win32 app"),
 115                     WS_OVERLAPPEDWINDOW,
 116                     CW_USEDEFAULT, CW_USEDEFAULT,
 117                     400, 300,
 118                     NULL, NULL, g_hInstance, NULL
 119                  );
 120     if ( !g_hwndMain )
 121         return false;
 122
 123     CreateWindow
 124     (
 125         _TEXT("static"),
 126         _TEXT("Main Win32 application"),
 127         WS_CHILD | WS_VISIBLE,
 128         10, 10, 200, 30,
 129         g_hwndMain, (HMENU)-1, g_hInstance, NULL
 130     );
 131
 132     CreateWindow
 133     (
 134         _TEXT("button"),
 135         _TEXT("Run GUI from DLL"),
 136         WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON,
 137         200, 200, 150, 35,
 138         g_hwndMain, (HMENU)IDB_RUN_GUI_FROM_DLL, g_hInstance, NULL
 139     );
 140
 141     return true;
 142 }
 143
 144 } // anonymous namespace
 145
 146 // ----------------------------------------------------------------------------
 147 // entry point
 148 // ----------------------------------------------------------------------------
 149
 150 int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int nCmdShow)
 151 {
 152     g_hInstance = hInstance;
 153
 154     if ( !RegisterMainClass() )
 155         return 1;
 156
 157     if ( !CreateMainWindow() )
 158         return 2;
 159
 160     ShowWindow(g_hwndMain, nCmdShow);
 161
 162     MSG msg;
 163     while ( GetMessage(&msg, NULL, 0, 0) )
 164     {
 165         TranslateMessage(&msg);
 166         DispatchMessage(&msg);
 167     }
 168
 169     return 0;
 170 }