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 FALSE, not creating a window.
  30 // (2) Restore the MFC code to create a window in InitInstance, and remove
  31 //     creation of CDummyWindow.
  32 //
  33 // IMPORTANT NOTES:
  34 //
  35 // (1) You need to set wxUSE_MFC to 1 in include/wx/msw/setup.h, which switches
  36 // off some debugging features and also removes the windows.h inclusion
  37 // in wxprec.h (MFC headers don't like this to have been included previously).
  38 // Then recompile wxWindows and this sample.
  39 //
  40 // (2) 10/3/2000, wxWindows 2.1.14: unfortunately there is an assert when
  41 // the sample tries to create an MFC window. Any suggestions welcome. It may be
  42 // a problem with conflicting project settings. Ignoring the assert (several times)
  43 // allows the sample to continue. In release mode the asserts don't happen.
  44 //
  45 // (3) I can't get the sample to link using a static MFC library, only the DLL
  46 // version. Perhaps someone else is a wizard at working out the required settings
  47 // in the wxWin library and the sample; then debugging the assert problem may be
  48 // easier.
  49
  50 // For compilers that support precompilation, includes "wx/wx.h".
  51 #include "wx/wxprec.h"
  52
  53 #ifdef __BORLANDC__
  54 #pragma hdrstop
  55 #endif
  56
  57 #include "wx/wx.h"
  58
  59 #ifdef _WINDOWS_
  60 #error Sorry, you need to edit include/wx/wxprec.h, comment out the windows.h inclusion, and recompile.
  61 #endif
  62
  63 #ifdef new
  64 #undef new
  65 #endif
  66
  67 #include "stdafx.h"
  68
  69 #ifdef DrawText
  70 #undef DrawText
  71 #endif
  72
  73 #include "resource.h"
  74
  75 #include "mfctest.h"
  76
  77 /////////////////////////////////////////////////////////////////////////////
  78
  79 // theApp:
  80 // Just creating this application object runs the whole application.
  81 //
  82 CTheApp theApp;
  83
  84 // wxWindows elements
  85
  86 // Define a new application type
  87 class MyApp: public wxApp
  88 { public:
  89     bool OnInit(void);
  90     wxFrame *CreateFrame(void);
  91  };
  92
  93 class MyCanvas: public wxScrolledWindow
  94 {
  95   public:
  96     MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size);
  97     void OnPaint(wxPaintEvent& event);
  98     void OnMouseEvent(wxMouseEvent& event);
  99 DECLARE_EVENT_TABLE()
 100 };
 101
 102 class MyChild: public wxFrame
 103 {
 104   public:
 105     MyCanvas *canvas;
 106     MyChild(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size, const long style);
 107     ~MyChild(void);
 108
 109     void OnQuit(wxCommandEvent& event);
 110     void OnNew(wxCommandEvent& event);
 111     void OnActivate(wxActivateEvent& event);
 112
 113 DECLARE_EVENT_TABLE()
 114 };
 115
 116 // For drawing lines in a canvas
 117 long xpos = -1;
 118 long ypos = -1;
 119
 120 // ID for the menu quit command
 121 #define HELLO_QUIT 1
 122 #define HELLO_NEW  2
 123
 124 DECLARE_APP(MyApp)
 125 IMPLEMENT_APP(MyApp)
 126
 127 /////////////////////////////////////////////////////////////////////////////
 128
 129 // CMainWindow constructor:
 130 // Create the window with the appropriate style, size, menu, etc.
 131 //
 132 CMainWindow::CMainWindow()
 133 {
 134         LoadAccelTable( "MainAccelTable" );
 135         Create( NULL, "Hello Foundation Application",
 136                 WS_OVERLAPPEDWINDOW, rectDefault, NULL, "MainMenu" );
 137 }
 138
 139 // OnPaint:
 140 // This routine draws the string "Hello, Windows!" in the center of the
 141 // client area.  It is called whenever Windows sends a WM_PAINT message.
 142 // Note that creating a CPaintDC automatically does a BeginPaint and
 143 // an EndPaint call is done when it is destroyed at the end of this
 144 // function.  CPaintDC's constructor needs the window (this).
 145 //
 146 void CMainWindow::OnPaint()
 147 {
 148         CString s = "Hello, Windows!";
 149         CPaintDC dc( this );
 150         CRect rect;
 151
 152         GetClientRect( rect );
 153         dc.SetTextAlign( TA_BASELINE | TA_CENTER );
 154         dc.SetTextColor( ::GetSysColor( COLOR_WINDOWTEXT ) );
 155         dc.SetBkMode(TRANSPARENT);
 156         dc.TextOut( ( rect.right / 2 ), ( rect.bottom / 2 ),
 157                                 s, s.GetLength() );
 158 }
 159
 160 // OnAbout:
 161 // This member function is called when a WM_COMMAND message with an
 162 // IDM_ABOUT code is received by the CMainWindow class object.  The
 163 // message map below is responsible for this routing.
 164 //
 165 // We create a ClDialog object using the "AboutBox" resource (see
 166 // hello.rc), and invoke it.
 167 //
 168 void CMainWindow::OnAbout()
 169 {
 170         CDialog about( "AboutBox", this );
 171         about.DoModal();
 172 }
 173
 174 void CMainWindow::OnTest()
 175 {
 176   wxMessageBox("This is a wxWindows message box.\nWe're about to create a new wxWindows frame.", "wxWindows", wxOK);
 177   wxGetApp().CreateFrame();
 178 }
 179
 180 // CMainWindow message map:
 181 // Associate messages with member functions.
 182 //
 183 // It is implied that the ON_WM_PAINT macro expects a member function
 184 // "void OnPaint()".
 185 //
 186 // It is implied that members connected with the ON_COMMAND macro
 187 // receive no arguments and are void of return type, e.g., "void OnAbout()".
 188 //
 189 BEGIN_MESSAGE_MAP( CMainWindow, CFrameWnd )
 190         //{{AFX_MSG_MAP( CMainWindow )
 191         ON_WM_PAINT()
 192         ON_COMMAND( IDM_ABOUT, OnAbout )
 193         ON_COMMAND( IDM_TEST, OnTest )
 194         //}}AFX_MSG_MAP
 195 END_MESSAGE_MAP()
 196
 197 /////////////////////////////////////////////////////////////////////////////
 198 // CTheApp
 199
 200 // InitInstance:
 201 // When any CTheApp object is created, this member function is automatically
 202 // called.  Any data may be set up at this point.
 203 //
 204 // Also, the main window of the application should be created and shown here.
 205 // Return TRUE if the initialization is successful.
 206 //
 207 BOOL CTheApp::InitInstance()
 208 {
 209         TRACE( "HELLO WORLD\n" );
 210
 211         SetDialogBkColor();     // hook gray dialogs (was default in MFC V1)
 212
 213     wxEntry((WXHINSTANCE) m_hInstance, (WXHINSTANCE) m_hPrevInstance, m_lpCmdLine, m_nCmdShow, FALSE);
 214
 215 /*
 216         m_pMainWnd = new CMainWindow();
 217         m_pMainWnd->ShowWindow( m_nCmdShow );
 218         m_pMainWnd->UpdateWindow();
 219 */
 220
 221     if (wxTheApp && wxTheApp->GetTopWindow())
 222     {
 223         m_pMainWnd = new CDummyWindow((HWND) wxTheApp->GetTopWindow()->GetHWND());
 224     }
 225
 226         return TRUE;
 227 }
 228
 229 int CTheApp::ExitInstance()
 230 {
 231   // OnExit isn't called by CleanUp so must be called explicitly.
 232   wxTheApp->OnExit();
 233   wxApp::CleanUp();
 234
 235   return CWinApp::ExitInstance();
 236 }
 237
 238 // Override this to provide wxWindows message loop
 239 // compatibility
 240
 241 BOOL CTheApp::PreTranslateMessage(MSG *msg)
 242 {
 243   if (wxTheApp && wxTheApp->ProcessMessage((WXMSG*) msg))
 244     return TRUE;
 245   else
 246     return CWinApp::PreTranslateMessage(msg);
 247 }
 248
 249 BOOL CTheApp::OnIdle(LONG lCount)
 250 {
 251     if (wxTheApp)
 252         return wxTheApp->ProcessIdle();
 253     else
 254         return FALSE;
 255 }
 256
 257 /*********************************************************************
 258  * wxWindows elements
 259  ********************************************************************/
 260
 261 bool MyApp::OnInit(void)
 262 {
 263   // Don't exit app when the top level frame is deleted
 264 //  SetExitOnFrameDelete(FALSE);
 265
 266   wxFrame* frame = CreateFrame();
 267   return TRUE;
 268 }
 269
 270 wxFrame *MyApp::CreateFrame(void)
 271 {
 272       MyChild *subframe = new MyChild(NULL, "Canvas Frame", wxPoint(10, 10), wxSize(300, 300),
 273                              wxDEFAULT_FRAME_STYLE);
 274
 275       subframe->SetTitle("wxWindows canvas frame");
 276
 277       // Give it a status line
 278       subframe->CreateStatusBar();
 279
 280       // Make a menubar
 281       wxMenu *file_menu = new wxMenu;
 282
 283       file_menu->Append(HELLO_NEW, "&New MFC Window");
 284       file_menu->Append(HELLO_QUIT, "&Close");
 285
 286       wxMenuBar *menu_bar = new wxMenuBar;
 287
 288       menu_bar->Append(file_menu, "&File");
 289
 290       // Associate the menu bar with the frame
 291       subframe->SetMenuBar(menu_bar);
 292
 293       int width, height;
 294       subframe->GetClientSize(&width, &height);
 295
 296       MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
 297       canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
 298       subframe->canvas = canvas;
 299
 300       // Give it scrollbars
 301 //      canvas->SetScrollbars(20, 20, 50, 50, 4, 4);
 302
 303       subframe->Show(TRUE);
 304       // Return the main frame window
 305       return subframe;
 306 }
 307
 308 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 309     EVT_PAINT(MyCanvas::OnPaint)
 310     EVT_MOUSE_EVENTS(MyCanvas::OnMouseEvent)
 311 END_EVENT_TABLE()
 312
 313 // Define a constructor for my canvas
 314 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size):
 315  wxScrolledWindow(parent, -1, pos, size)
 316 {
 317 }
 318
 319 // Define the repainting behaviour
 320 void MyCanvas::OnPaint(wxPaintEvent& event)
 321 {
 322     wxPaintDC dc(this);
 323
 324     dc.SetFont(* wxSWISS_FONT);
 325     dc.SetPen(* wxGREEN_PEN);
 326     dc.DrawLine(0, 0, 200, 200);
 327     dc.DrawLine(200, 0, 0, 200);
 328
 329     dc.SetBrush(* wxCYAN_BRUSH);
 330     dc.SetPen(* wxRED_PEN);
 331     dc.DrawRectangle(100, 100, 100, 50);
 332     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 333
 334     dc.DrawEllipse(250, 250, 100, 50);
 335     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 336     dc.DrawLine(50, 230, 200, 230);
 337     dc.DrawText("This is a test string", 50, 230);
 338 }
 339
 340 // This implements a tiny doodling program! Drag the mouse using
 341 // the left button.
 342 void MyCanvas::OnMouseEvent(wxMouseEvent& event)
 343 {
 344     wxClientDC dc(this);
 345     dc.SetPen(* wxBLACK_PEN);
 346     wxPoint pos = event.GetPosition();
 347     if (xpos > -1 && ypos > -1 && event.Dragging())
 348     {
 349         dc.DrawLine(xpos, ypos, pos.x, pos.y);
 350     }
 351     xpos = pos.x;
 352     ypos = pos.y;
 353 }
 354
 355 BEGIN_EVENT_TABLE(MyChild, wxFrame)
 356     EVT_MENU(HELLO_QUIT, MyChild::OnQuit)
 357     EVT_MENU(HELLO_NEW, MyChild::OnNew)
 358     EVT_ACTIVATE(MyChild::OnActivate)
 359 END_EVENT_TABLE()
 360
 361 MyChild::MyChild(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size, const long style):
 362   wxFrame(frame, -1, title, pos, size, style)
 363 {
 364   canvas = NULL;
 365 }
 366
 367 MyChild::~MyChild(void)
 368 {
 369 }
 370
 371 void MyChild::OnQuit(wxCommandEvent& event)
 372 {
 373     Close(TRUE);
 374 }
 375
 376 void MyChild::OnNew(wxCommandEvent& event)
 377 {
 378     CMainWindow *mainWin = new CMainWindow();
 379     mainWin->ShowWindow( TRUE );
 380     mainWin->UpdateWindow();
 381 }
 382
 383 void MyChild::OnActivate(wxActivateEvent& event)
 384 {
 385   if (event.GetActive() && canvas)
 386     canvas->SetFocus();
 387 }
 388
 389 // Dummy MFC window for specifying a valid main window to MFC, using
 390 // a wxWindows HWND.
 391 CDummyWindow::CDummyWindow(HWND hWnd):CWnd()
 392 {
 393   Attach(hWnd);
 394 }
 395
 396 // Don't let the CWnd destructor delete the HWND
 397 CDummyWindow::~CDummyWindow(void)
 398 {
 399   Detach();
 400 }
 401