samples/mfc/mfctest.cpp

   1 // hello.cpp : Defines the class behaviors for the application.
   2 //           Hello is a simple program which consists of a main window
   3 //           and an "About" dialog which can be invoked by a menu choice.
   4 //           It is intended to serve as a starting-point for new
   5 //           applications.
   6 //
   7 // This is a part of the Microsoft Foundation Classes C++ library.
   8 // Copyright (C) 1992 Microsoft Corporation
   9 // All rights reserved.
  10 //
  11 // This source code is only intended as a supplement to the
  12 // Microsoft Foundation Classes Reference and Microsoft
  13 // WinHelp documentation provided with the library.
  14 // See these sources for detailed information regarding the
  15 // Microsoft Foundation Classes product.
  16
  17 // *** MODIFIED BY JULIAN SMART TO DEMONSTRATE CO-EXISTANCE WITH wxWINDOWS ***
  18 //
  19 // This sample pops up an initial wxWindows frame, with a menu item
  20 // that allows a new MFC window to be created. Note that CDummyWindow
  21 // is a class that allows a wxWindows window to be seen as a CWnd
  22 // for the purposes of specifying a valid main window to the
  23 // MFC initialisation.
  24 //
  25 // You can easily modify this code so that an MFC window pops up
  26 // initially as the main frame, and allows wxWindows frames to be
  27 // created subsequently:
  28 //
  29 // (1) Make MyApp::OnInit return NULL, not create a window.
  30 // (2) Restore the MFC code to create a window in InitInstance, and remove
  31 //     creation of CDummyWindow.
  32 //
  33 // IMPORTANT NOTE: to compile this sample, you must first edit
  34 // wx/src/msw/wx_main.cc, set NOWINMAIN to 1, and remake wxWindows
  35 // (it only needs to recompile wx_main.cc).
  36 // This eliminates the duplicate WinMain function which MFC implements.
  37
  38 // For compilers that support precompilation, includes "wx/wx.h".
  39 #include "wx/wxprec.h"
  40
  41 #ifdef __BORLANDC__
  42 #pragma hdrstop
  43 #endif
  44
  45 #include "wx/wx.h"
  46
  47 #ifdef _WINDOWS_
  48 #error Sorry, you need to edit include/wx/wxprec.h, comment out the windows.h inclusion, and recompile.
  49 #endif
  50
  51 #ifdef new
  52 #undef new
  53 #endif
  54
  55 #include "stdafx.h"
  56
  57 #ifdef DrawText
  58 #undef DrawText
  59 #endif
  60
  61 #include "resource.h"
  62
  63 #include "mfctest.h"
  64
  65 /////////////////////////////////////////////////////////////////////////////
  66
  67 // theApp:
  68 // Just creating this application object runs the whole application.
  69 //
  70 CTheApp theApp;
  71
  72 // wxWindows elements
  73
  74 // Define a new application type
  75 class MyApp: public wxApp
  76 { public:
  77     bool OnInit(void);
  78     wxFrame *CreateFrame(void);
  79  };
  80
  81 class MyCanvas: public wxScrolledWindow
  82 {
  83   public:
  84     MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size);
  85     void OnPaint(wxPaintEvent& event);
  86     void OnMouseEvent(wxMouseEvent& event);
  87 DECLARE_EVENT_TABLE()
  88 };
  89
  90 class MyChild: public wxFrame
  91 {
  92   public:
  93     MyCanvas *canvas;
  94     MyChild(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size, const long style);
  95     ~MyChild(void);
  96     bool OnClose(void);
  97
  98     void OnQuit(wxCommandEvent& event);
  99     void OnNew(wxCommandEvent& event);
 100     void OnActivate(wxActivateEvent& event);
 101
 102 DECLARE_EVENT_TABLE()
 103 };
 104
 105 // For drawing lines in a canvas
 106 long xpos = -1;
 107 long ypos = -1;
 108
 109 // ID for the menu quit command
 110 #define HELLO_QUIT 1
 111 #define HELLO_NEW  2
 112
 113 DECLARE_APP(MyApp)
 114 IMPLEMENT_APP(MyApp)
 115
 116 /////////////////////////////////////////////////////////////////////////////
 117
 118 // CMainWindow constructor:
 119 // Create the window with the appropriate style, size, menu, etc.
 120 //
 121 CMainWindow::CMainWindow()
 122 {
 123         LoadAccelTable( "MainAccelTable" );
 124         Create( NULL, "Hello Foundation Application",
 125                 WS_OVERLAPPEDWINDOW, rectDefault, NULL, "MainMenu" );
 126 }
 127
 128 // OnPaint:
 129 // This routine draws the string "Hello, Windows!" in the center of the
 130 // client area.  It is called whenever Windows sends a WM_PAINT message.
 131 // Note that creating a CPaintDC automatically does a BeginPaint and
 132 // an EndPaint call is done when it is destroyed at the end of this
 133 // function.  CPaintDC's constructor needs the window (this).
 134 //
 135 void CMainWindow::OnPaint()
 136 {
 137         CString s = "Hello, Windows!";
 138         CPaintDC dc( this );
 139         CRect rect;
 140
 141         GetClientRect( rect );
 142         dc.SetTextAlign( TA_BASELINE | TA_CENTER );
 143         dc.SetTextColor( ::GetSysColor( COLOR_WINDOWTEXT ) );
 144         dc.SetBkMode(TRANSPARENT);
 145         dc.TextOut( ( rect.right / 2 ), ( rect.bottom / 2 ),
 146                                 s, s.GetLength() );
 147 }
 148
 149 // OnAbout:
 150 // This member function is called when a WM_COMMAND message with an
 151 // IDM_ABOUT code is received by the CMainWindow class object.  The
 152 // message map below is responsible for this routing.
 153 //
 154 // We create a ClDialog object using the "AboutBox" resource (see
 155 // hello.rc), and invoke it.
 156 //
 157 void CMainWindow::OnAbout()
 158 {
 159         CDialog about( "AboutBox", this );
 160         about.DoModal();
 161 }
 162
 163 void CMainWindow::OnTest()
 164 {
 165   wxMessageBox("This is a wxWindows message box.\nWe're about to create a new wxWindows frame.", "wxWindows", wxOK);
 166   wxGetApp().CreateFrame();
 167 }
 168
 169 // CMainWindow message map:
 170 // Associate messages with member functions.
 171 //
 172 // It is implied that the ON_WM_PAINT macro expects a member function
 173 // "void OnPaint()".
 174 //
 175 // It is implied that members connected with the ON_COMMAND macro
 176 // receive no arguments and are void of return type, e.g., "void OnAbout()".
 177 //
 178 BEGIN_MESSAGE_MAP( CMainWindow, CFrameWnd )
 179         //{{AFX_MSG_MAP( CMainWindow )
 180         ON_WM_PAINT()
 181         ON_COMMAND( IDM_ABOUT, OnAbout )
 182         ON_COMMAND( IDM_TEST, OnTest )
 183         //}}AFX_MSG_MAP
 184 END_MESSAGE_MAP()
 185
 186 /////////////////////////////////////////////////////////////////////////////
 187 // CTheApp
 188
 189 // InitInstance:
 190 // When any CTheApp object is created, this member function is automatically
 191 // called.  Any data may be set up at this point.
 192 //
 193 // Also, the main window of the application should be created and shown here.
 194 // Return TRUE if the initialization is successful.
 195 //
 196 BOOL CTheApp::InitInstance()
 197 {
 198         TRACE( "HELLO WORLD\n" );
 199
 200         SetDialogBkColor();     // hook gray dialogs (was default in MFC V1)
 201
 202     wxEntry((WXHINSTANCE) m_hInstance, (WXHINSTANCE) m_hPrevInstance, m_lpCmdLine, m_nCmdShow, FALSE);
 203
 204 /*
 205         m_pMainWnd = new CMainWindow();
 206         m_pMainWnd->ShowWindow( m_nCmdShow );
 207         m_pMainWnd->UpdateWindow();
 208 */
 209
 210     if (wxTheApp && wxTheApp->GetTopWindow())
 211     {
 212         m_pMainWnd = new CDummyWindow((HWND) wxTheApp->GetTopWindow()->GetHWND());
 213     }
 214
 215         return TRUE;
 216 }
 217
 218 int CTheApp::ExitInstance()
 219 {
 220   // OnExit isn't called by CleanUp so must be called explicitly.
 221   wxTheApp->OnExit();
 222   wxApp::CleanUp();
 223
 224   return CWinApp::ExitInstance();
 225 }
 226
 227 // Override this to provide wxWindows message loop
 228 // compatibility
 229
 230 BOOL CTheApp::PreTranslateMessage(MSG *msg)
 231 {
 232   if (wxTheApp && wxTheApp->ProcessMessage((WXMSG*) msg))
 233     return TRUE;
 234   else
 235     return CWinApp::PreTranslateMessage(msg);
 236 }
 237
 238 BOOL CTheApp::OnIdle(LONG lCount)
 239 {
 240     if (wxTheApp)
 241         return wxTheApp->ProcessIdle();
 242     else
 243         return FALSE;
 244 }
 245
 246 /*********************************************************************
 247  * wxWindows elements
 248  ********************************************************************/
 249
 250 bool MyApp::OnInit(void)
 251 {
 252   // Don't exit app when the top level frame is deleted
 253 //  SetExitOnFrameDelete(FALSE);
 254
 255   wxFrame* frame = CreateFrame();
 256   return TRUE;
 257 }
 258
 259 wxFrame *MyApp::CreateFrame(void)
 260 {
 261       MyChild *subframe = new MyChild(NULL, "Canvas Frame", wxPoint(10, 10), wxSize(300, 300),
 262                              wxDEFAULT_FRAME_STYLE);
 263
 264       subframe->SetTitle("wxWindows canvas frame");
 265
 266       // Give it a status line
 267       subframe->CreateStatusBar();
 268
 269       // Make a menubar
 270       wxMenu *file_menu = new wxMenu;
 271
 272       file_menu->Append(HELLO_NEW, "&New MFC Window");
 273       file_menu->Append(HELLO_QUIT, "&Close");
 274
 275       wxMenuBar *menu_bar = new wxMenuBar;
 276
 277       menu_bar->Append(file_menu, "&File");
 278
 279       // Associate the menu bar with the frame
 280       subframe->SetMenuBar(menu_bar);
 281
 282       int width, height;
 283       subframe->GetClientSize(&width, &height);
 284
 285       MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
 286       canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
 287       subframe->canvas = canvas;
 288
 289       // Give it scrollbars
 290 //      canvas->SetScrollbars(20, 20, 50, 50, 4, 4);
 291
 292       subframe->Show(TRUE);
 293       // Return the main frame window
 294       return subframe;
 295 }
 296
 297 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 298     EVT_PAINT(MyCanvas::OnPaint)
 299     EVT_MOUSE_EVENTS(MyCanvas::OnMouseEvent)
 300 END_EVENT_TABLE()
 301
 302 // Define a constructor for my canvas
 303 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size):
 304  wxScrolledWindow(parent, -1, pos, size)
 305 {
 306 }
 307
 308 // Define the repainting behaviour
 309 void MyCanvas::OnPaint(wxPaintEvent& event)
 310 {
 311     wxPaintDC dc(this);
 312
 313     dc.SetFont(* wxSWISS_FONT);
 314     dc.SetPen(* wxGREEN_PEN);
 315     dc.DrawLine(0, 0, 200, 200);
 316     dc.DrawLine(200, 0, 0, 200);
 317
 318     dc.SetBrush(* wxCYAN_BRUSH);
 319     dc.SetPen(* wxRED_PEN);
 320     dc.DrawRectangle(100, 100, 100, 50);
 321     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 322
 323     dc.DrawEllipse(250, 250, 100, 50);
 324     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 325     dc.DrawLine(50, 230, 200, 230);
 326     dc.DrawText("This is a test string", 50, 230);
 327 }
 328
 329 // This implements a tiny doodling program! Drag the mouse using
 330 // the left button.
 331 void MyCanvas::OnMouseEvent(wxMouseEvent& event)
 332 {
 333     wxClientDC dc(this);
 334     dc.SetPen(* wxBLACK_PEN);
 335     long x, y;
 336     event.Position(&x, &y);
 337     if (xpos > -1 && ypos > -1 && event.Dragging())
 338     {
 339         dc.DrawLine(xpos, ypos, x, y);
 340     }
 341     xpos = x;
 342     ypos = y;
 343 }
 344
 345 BEGIN_EVENT_TABLE(MyChild, wxFrame)
 346     EVT_MENU(HELLO_QUIT, MyChild::OnQuit)
 347     EVT_MENU(HELLO_NEW, MyChild::OnNew)
 348     EVT_ACTIVATE(MyChild::OnActivate)
 349 END_EVENT_TABLE()
 350
 351 MyChild::MyChild(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size, const long style):
 352   wxFrame(frame, -1, title, pos, size, style)
 353 {
 354   canvas = NULL;
 355 }
 356
 357 MyChild::~MyChild(void)
 358 {
 359 }
 360
 361 void MyChild::OnQuit(wxCommandEvent& event)
 362 {
 363     Close(TRUE);
 364 }
 365
 366 void MyChild::OnNew(wxCommandEvent& event)
 367 {
 368     CMainWindow *mainWin = new CMainWindow();
 369     mainWin->ShowWindow( TRUE );
 370     mainWin->UpdateWindow();
 371 }
 372
 373 void MyChild::OnActivate(wxActivateEvent& event)
 374 {
 375   if (event.GetActive() && canvas)
 376     canvas->SetFocus();
 377 }
 378
 379 bool MyChild::OnClose(void)
 380 {
 381   return TRUE;
 382 }
 383
 384
 385 // Dummy MFC window for specifying a valid main window to MFC, using
 386 // a wxWindows HWND.
 387 CDummyWindow::CDummyWindow(HWND hWnd):CWnd()
 388 {
 389   Attach(hWnd);
 390 }
 391
 392 // Don't let the CWnd destructor delete the HWND
 393 CDummyWindow::~CDummyWindow(void)
 394 {
 395   Detach();
 396 }
 397