More small fixes

[wxWidgets.git] / src / msw / dialog.cpp

diff --git a/src/msw/dialog.cpp b/src/msw/dialog.cpp
index a9849ee21802f47542c63dd79edab9e633fb2a9c..78d54abe46cb44894773e2ea7de2deffed664f0b 100644 (file)
--- a/src/msw/dialog.cpp
+++ b/src/msw/dialog.cpp
@@ -70,8 +70,6 @@ wxWindowList wxModelessWindows;
 // all modal dialogs currently shown
 static wxWindowList wxModalDialogs;
 
 // all modal dialogs currently shown
 static wxWindowList wxModalDialogs;
 

-static wxWindow *m_oldFocus;
-

 // ----------------------------------------------------------------------------
 // wxWin macros
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxWin macros
 // ----------------------------------------------------------------------------


@@ -98,31 +96,35 @@ END_EVENT_TABLE()
 // wxDialog construction
 // ----------------------------------------------------------------------------
 
 // wxDialog construction
 // ----------------------------------------------------------------------------
 

-wxDialog::wxDialog()
+void wxDialog::Init()

 {
 {

+    m_oldFocus = (wxWindow *)NULL;
+

     m_isShown = FALSE;
 
     m_isShown = FALSE;
 

+    m_windowDisabler = (wxWindowDisabler *)NULL;
+

     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 }
 
     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 }
 

-bool wxDialog::Create(wxWindow *parent, wxWindowID id,
+bool wxDialog::Create(wxWindow *parent,
+                      wxWindowID id,

                       const wxString& title,
                       const wxPoint& pos,
                       const wxSize& size,
                       long style,
                       const wxString& name)
 {
                       const wxString& title,
                       const wxPoint& pos,
                       const wxSize& size,
                       long style,
                       const wxString& name)
 {

+    Init();
+

     m_oldFocus = FindFocus();
 
     m_oldFocus = FindFocus();
 

-    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));

     SetName(name);
 
     SetName(name);
 

-    if (!parent)
-        wxTopLevelWindows.Append(this);
-
-    //  windowFont = wxTheFontList->FindOrCreateFont(11, wxSWISS, wxNORMAL, wxNORMAL);
+    wxTopLevelWindows.Append(this);

 
 

-    if (parent) parent->AddChild(this);
+    if ( parent )
+        parent->AddChild(this);

 
     if ( id == -1 )
         m_windowId = (int)NewControlId();
 
     if ( id == -1 )
         m_windowId = (int)NewControlId();


@@ -141,8 +143,6 @@ bool wxDialog::Create(wxWindow *parent, wxWindowID id,
 
     m_windowStyle = style;
 
 
     m_windowStyle = style;
 

-    m_isShown = FALSE;
-

     if (width < 0)
         width = wxDIALOG_DEFAULT_WIDTH;
     if (height < 0)
     if (width < 0)
         width = wxDIALOG_DEFAULT_WIDTH;
     if (height < 0)


@@ -155,6 +155,11 @@ bool wxDialog::Create(wxWindow *parent, wxWindowID id,
     if (m_windowStyle & wxSTAY_ON_TOP)
         extendedStyle |= WS_EX_TOPMOST;
 
     if (m_windowStyle & wxSTAY_ON_TOP)
         extendedStyle |= WS_EX_TOPMOST;
 

+#ifndef __WIN16__
+    if (m_exStyle & wxDIALOG_EX_CONTEXTHELP)
+        extendedStyle |= WS_EX_CONTEXTHELP;
+#endif
+

     // Allows creation of dialogs with & without captions under MSWindows,
     // resizeable or not (but a resizeable dialog always has caption -
     // otherwise it would look too strange)
     // Allows creation of dialogs with & without captions under MSWindows,
     // resizeable or not (but a resizeable dialog always has caption -
     // otherwise it would look too strange)


@@ -175,7 +180,7 @@ bool wxDialog::Create(wxWindow *parent, wxWindowID id,
 
     if ( !hwnd )
     {
 
     if ( !hwnd )
     {

-        wxLogError(_("Failed to create dialog."));
+        wxFAIL_MSG(_("Failed to create dialog. You probably forgot to include wx/msw/wx.rc in your resources."));

 
         return FALSE;
     }
 
         return FALSE;
     }


@@ -183,7 +188,36 @@ bool wxDialog::Create(wxWindow *parent, wxWindowID id,
     SubclassWin(GetHWND());
 
     SetWindowText(hwnd, title);
     SubclassWin(GetHWND());
 
     SetWindowText(hwnd, title);

-    SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+
+    return TRUE;
+}
+
+bool wxDialog::EnableCloseButton(bool enable)
+{
+    // get system (a.k.a. window) menu
+    HMENU hmenu = ::GetSystemMenu(GetHwnd(), FALSE /* get it */);
+    if ( !hmenu )
+    {
+        wxLogLastError(_T("GetSystemMenu"));
+
+        return FALSE;
+    }
+
+    // enabling/disabling the close item from it also automatically
+    // disables/enabling the close title bar button
+    if ( !::EnableMenuItem(hmenu, SC_CLOSE,
+                           MF_BYCOMMAND | (enable ? MF_ENABLED : MF_GRAYED)) )
+    {
+        wxLogLastError(_T("DeleteMenu(SC_CLOSE)"));
+
+        return FALSE;
+    }
+
+    // update appearance immediately
+    if ( !::DrawMenuBar(GetHwnd()) )
+    {
+        wxLogLastError(_T("DrawMenuBar"));
+    }

 
     return TRUE;
 }
 
     return TRUE;
 }


@@ -210,8 +244,7 @@ wxDialog::~wxDialog()
 
     wxTopLevelWindows.DeleteObject(this);
 
 
     wxTopLevelWindows.DeleteObject(this);
 

-    // this will call BringWindowToTop() if necessary to bring back our parent
-    // window to top
+    // this will also reenable all the other windows for a modal dialog

     Show(FALSE);
 
     if ( !IsModal() )
     Show(FALSE);
 
     if ( !IsModal() )


@@ -236,24 +269,26 @@ wxDialog::~wxDialog()
 // By default, pressing escape cancels the dialog
 void wxDialog::OnCharHook(wxKeyEvent& event)
 {
 // By default, pressing escape cancels the dialog
 void wxDialog::OnCharHook(wxKeyEvent& event)
 {

-  if (GetHWND())
-  {
-    if (event.m_keyCode == WXK_ESCAPE)
+    if (GetHWND())

     {
     {

-        // Behaviour changed in 2.0: we'll send a Cancel message
-        // to the dialog instead of Close.
-        wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
-        cancelEvent.SetEventObject( this );
-        GetEventHandler()->ProcessEvent(cancelEvent);
-
-        // ensure that there is another message for this window so the
-        // ShowModal loop will exit and won't get stuck in GetMessage().
-        ::PostMessage(GetHwnd(), WM_NULL, 0, 0);
-        return;
+        // "Esc" works as an accelerator for the "Cancel" button, but it
+        // shouldn't close the dialog which doesn't have any cancel button
+        if ( (event.m_keyCode == WXK_ESCAPE) && FindWindow(wxID_CANCEL) )
+        {
+            wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
+            cancelEvent.SetEventObject( this );
+            GetEventHandler()->ProcessEvent(cancelEvent);
+
+            // ensure that there is another message for this window so the
+            // ShowModal loop will exit and won't get stuck in GetMessage().
+            ::PostMessage(GetHwnd(), WM_NULL, 0, 0);
+
+            return;
+        }

     }
     }

-  }
-  // We didn't process this event.
-  event.Skip();
+
+    // We didn't process this event.
+    event.Skip();

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -323,27 +358,33 @@ bool wxDialog::IsModalShowing() const
 void wxDialog::DoShowModal()
 {
     wxCHECK_RET( !IsModalShowing(), _T("DoShowModal() called twice") );
 void wxDialog::DoShowModal()
 {
     wxCHECK_RET( !IsModalShowing(), _T("DoShowModal() called twice") );

+    wxCHECK_RET( IsModal(), _T("can't DoShowModal() modeless dialog") );

 
     wxModalDialogs.Append(this);
 
     wxWindow *parent = GetParent();
 
 
     wxModalDialogs.Append(this);
 
     wxWindow *parent = GetParent();
 

+    wxWindow* oldFocus = m_oldFocus;
+
+    // We have to remember the HWND because we need to check
+    // the HWND still exists (oldFocus can be garbage when the dialog
+    // exits, if it has been destroyed)
+    HWND hwndOldFocus = 0;
+    if (oldFocus)
+        hwndOldFocus = (HWND) oldFocus->GetHWND();
+

     // remember where the focus was
     // remember where the focus was

-    if ( !m_oldFocus )
-    {
-        m_oldFocus = parent;
-    }
-    if ( !m_oldFocus )
+    if ( !oldFocus )

     {
     {

-        m_oldFocus = wxTheApp->GetTopWindow();
+        oldFocus = parent;
+        if ( parent )
+            hwndOldFocus = GetHwndOf(parent);

     }
 
     }
 

-    // disable the parent window first
-    HWND hwndParent = parent ? GetHwndOf(parent) : (HWND)NULL;
-    if ( hwndParent )
-    {
-        ::EnableWindow(hwndParent, FALSE);
-    }
+    // disable all other app windows
+    wxASSERT_MSG( !m_windowDisabler, _T("disabling windows twice?") );
+
+    m_windowDisabler = new wxWindowDisabler(this);

 
     // enter the modal loop
     while ( IsModalShowing() )
 
     // enter the modal loop
     while ( IsModalShowing() )


@@ -359,31 +400,29 @@ void wxDialog::DoShowModal()
         wxTheApp->DoMessage();
     }
 
         wxTheApp->DoMessage();
     }
 

-    // reenable the parent window if any
-    if ( hwndParent )
-    {
-        ::EnableWindow(hwndParent, TRUE);
-    }
-

     // and restore focus
     // and restore focus

-    if ( m_oldFocus && (m_oldFocus != this) )
+    // Note that this code MUST NOT access the dialog object's data
+    // in case the object has been deleted (which will be the case
+    // for a modal dialog that has been destroyed before calling EndModal).
+    if ( oldFocus && (oldFocus != this) && ::IsWindow(hwndOldFocus))

     {
     {

-        m_oldFocus->SetFocus();
+        // This is likely to prove that the object still exists
+        if (wxFindWinFromHandle((WXHWND) hwndOldFocus) == oldFocus)
+            oldFocus->SetFocus();

     }
 }
 
 bool wxDialog::Show(bool show)
 {
     }
 }
 
 bool wxDialog::Show(bool show)
 {

-    // The following is required when the parent has been disabled, (modal
-    // dialogs, or modeless dialogs with disabling such as wxProgressDialog).
-    // Otherwise the parent disappears behind other windows when the dialog is
-    // hidden.

     if ( !show )
     {
     if ( !show )
     {

-        wxWindow *parent = GetParent();
-        if ( parent )
+        // if we had disabled other app windows, reenable them back now because
+        // if they stay disabled Windows will activate another window (one
+        // which is enabled, anyhow) and we will lose activation
+        if ( m_windowDisabler )

         {
         {

-            ::BringWindowToTop(GetHwndOf(parent));
+            delete m_windowDisabler;
+            m_windowDisabler = NULL;

         }
     }
 
         }
     }
 


@@ -404,6 +443,29 @@ bool wxDialog::Show(bool show)
     {
         if ( show )
         {
     {
         if ( show )
         {

+            // modal dialog needs a parent window, so try to find one
+            if ( !GetParent() )
+            {
+                wxWindow *parent = wxTheApp->GetTopWindow();
+                if ( parent && parent != this && parent->IsShown() )
+                {
+                    // use it
+                    m_parent = parent;
+
+                    // VZ: to make dialog behave properly we should reparent
+                    //     the dialog for Windows as well - unfortunately,
+                    //     following the docs for SetParent() results in this
+                    //     code which plainly doesn't work
+#if 0
+                    long dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
+                    dwStyle &= ~WS_POPUP;
+                    dwStyle |= WS_CHILD;
+                    ::SetWindowLong(GetHwnd(), GWL_STYLE, dwStyle);
+                    ::SetParent(GetHwnd(), GetHwndOf(parent));
+#endif // 0
+                }
+            }
+

             DoShowModal();
         }
         else // end of modal dialog
             DoShowModal();
         }
         else // end of modal dialog


@@ -417,11 +479,16 @@ bool wxDialog::Show(bool show)
     return TRUE;
 }
 
     return TRUE;
 }
 

-// Replacement for Show(TRUE) for modal dialogs - returns return code
+// a special version for Show(TRUE) for modal dialogs which returns return code

 int wxDialog::ShowModal()
 {
 int wxDialog::ShowModal()
 {

-    m_windowStyle |= wxDIALOG_MODAL;
+    if ( !IsModal() )
+    {
+        SetModal(TRUE);
+    }
+

     Show(TRUE);
     Show(TRUE);

+

     return GetReturnCode();
 }
 
     return GetReturnCode();
 }
 


@@ -439,7 +506,7 @@ void wxDialog::EndModal(int retCode)
 // ----------------------------------------------------------------------------
 
 // Standard buttons
 // ----------------------------------------------------------------------------
 
 // Standard buttons

-void wxDialog::OnOK(wxCommandEvent& event)
+void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))

 {
   if ( Validate() && TransferDataFromWindow() )
   {
 {
   if ( Validate() && TransferDataFromWindow() )
   {


@@ -447,7 +514,7 @@ void wxDialog::OnOK(wxCommandEvent& event)
   }
 }
 
   }
 }
 

-void wxDialog::OnApply(wxCommandEvent& event)
+void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))

 {
     if ( Validate() )
         TransferDataFromWindow();
 {
     if ( Validate() )
         TransferDataFromWindow();


@@ -455,12 +522,12 @@ void wxDialog::OnApply(wxCommandEvent& event)
     // TODO probably need to disable the Apply button until things change again
 }
 
     // TODO probably need to disable the Apply button until things change again
 }
 

-void wxDialog::OnCancel(wxCommandEvent& event)
+void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))

 {
     EndModal(wxID_CANCEL);
 }
 
 {
     EndModal(wxID_CANCEL);
 }
 

-void wxDialog::OnCloseWindow(wxCloseEvent& event)
+void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))

 {
     // We'll send a Cancel message by default, which may close the dialog.
     // Check for looping if the Cancel event handler calls Close().
 {
     // We'll send a Cancel message by default, which may close the dialog.
     // Check for looping if the Cancel event handler calls Close().


@@ -501,7 +568,7 @@ bool wxDialog::Destroy()
     return TRUE;
 }
 
     return TRUE;
 }
 

-void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& event)
+void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))

 {
 #if wxUSE_CTL3D
     Ctl3dColorChange();
 {
 #if wxUSE_CTL3D
     Ctl3dColorChange();


@@ -522,6 +589,35 @@ long wxDialog::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 
     switch ( message )
     {
 
     switch ( message )
     {

+#if 0 // now that we got owner window right it doesn't seem to be needed
+        case WM_ACTIVATE:
+            switch ( LOWORD(wParam) )
+            {
+                case WA_ACTIVE:
+                case WA_CLICKACTIVE:
+                    if ( IsModalShowing() && GetParent() )
+                    {
+                        // bring the owner window to top as the standard dialog
+                        // boxes do
+                        if ( !::SetWindowPos
+                                (
+                                    GetHwndOf(GetParent()),
+                                    GetHwnd(),
+                                    0, 0,
+                                    0, 0,
+                                    SWP_NOACTIVATE |
+                                    SWP_NOMOVE |
+                                    SWP_NOSIZE
+                                ) )
+                        {
+                            wxLogLastError(wxT("SetWindowPos(SWP_NOACTIVATE)"));
+                        }
+                    }
+                    // fall through to process it normally as well
+            }
+            break;
+#endif // 0
+

         case WM_CLOSE:
             // if we can't close, tell the system that we processed the
             // message - otherwise it would close us
         case WM_CLOSE:
             // if we can't close, tell the system that we processed the
             // message - otherwise it would close us


@@ -531,13 +627,28 @@ long wxDialog::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
         case WM_SETCURSOR:
             // we want to override the busy cursor for modal dialogs:
             // typically, wxBeginBusyCursor() is called and then a modal dialog
         case WM_SETCURSOR:
             // we want to override the busy cursor for modal dialogs:
             // typically, wxBeginBusyCursor() is called and then a modal dialog

-            // is shown, but the modal dialog shouldn't have this cursor
-            if ( wxIsBusy() )
+            // is shown, but the modal dialog shouldn't have hourglass cursor
+            if ( IsModalShowing() && wxIsBusy() )

             {
             {

-                rc = TRUE;
+                // set our cursor for all windows (but see below)
+                wxCursor cursor = m_cursor;
+                if ( !cursor.Ok() )
+                    cursor = wxCURSOR_ARROW;

 
 

+                ::SetCursor(GetHcursorOf(cursor));
+
+                // in any case, stop here and don't let wxWindow process this
+                // message (it would set the busy cursor)

                 processed = TRUE;
                 processed = TRUE;

+
+                // but return FALSE to tell the child window (if the event
+                // comes from one of them and not from ourselves) that it can
+                // set its own cursor if it has one: thus, standard controls
+                // (e.g. text ctrl) still have correct cursors in a dialog
+                // invoked while wxIsBusy()
+                rc = FALSE;

             }
             }

+            break;

     }
 
     if ( !processed )
     }
 
     if ( !processed )