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