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