A bit of confusion over what is RGB stands for blue...

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

diff --git a/src/msw/combobox.cpp b/src/msw/combobox.cpp
index f71cb41a3f5352e0f8838abadb693efe184228f9..c14341c0019261ce5aa98854ebc55e38687cbf77 100644 (file)
--- a/src/msw/combobox.cpp
+++ b/src/msw/combobox.cpp
@@ -65,7 +65,7 @@ wxBEGIN_FLAGS( wxComboBoxStyle )
     wxFLAGS_MEMBER(wxBORDER_RAISED)
     wxFLAGS_MEMBER(wxBORDER_STATIC)
     wxFLAGS_MEMBER(wxBORDER_NONE)
     wxFLAGS_MEMBER(wxBORDER_RAISED)
     wxFLAGS_MEMBER(wxBORDER_STATIC)
     wxFLAGS_MEMBER(wxBORDER_NONE)

-    
+

     // old style border flags
     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
     // old style border flags
     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
     wxFLAGS_MEMBER(wxSUNKEN_BORDER)


@@ -94,15 +94,15 @@ wxEND_FLAGS( wxComboBoxStyle )
 IMPLEMENT_DYNAMIC_CLASS_XTI(wxComboBox, wxControl,"wx/combobox.h")
 
 wxBEGIN_PROPERTIES_TABLE(wxComboBox)
 IMPLEMENT_DYNAMIC_CLASS_XTI(wxComboBox, wxControl,"wx/combobox.h")
 
 wxBEGIN_PROPERTIES_TABLE(wxComboBox)

-       wxEVENT_PROPERTY( Select , wxEVT_COMMAND_COMBOBOX_SELECTED , wxCommandEvent )
+    wxEVENT_PROPERTY( Select , wxEVT_COMMAND_COMBOBOX_SELECTED , wxCommandEvent )

     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 
     // TODO DELEGATES
     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 
     // TODO DELEGATES

-       wxPROPERTY( Font , wxFont , SetFont , GetFont  , , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+    wxPROPERTY( Font , wxFont , SetFont , GetFont  , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))

     wxPROPERTY_COLLECTION( Choices , wxArrayString , wxString , AppendString , GetStrings , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
     wxPROPERTY_COLLECTION( Choices , wxArrayString , wxString , AppendString , GetStrings , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))

-       wxPROPERTY( Value ,wxString, SetValue, GetValue, , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
-       wxPROPERTY( Selection ,int, SetSelection, GetSelection, , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
-    wxPROPERTY_FLAGS( WindowStyle , wxComboBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
+    wxPROPERTY( Value ,wxString, SetValue, GetValue, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+    wxPROPERTY( Selection ,int, SetSelection, GetSelection, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+    wxPROPERTY_FLAGS( WindowStyle , wxComboBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style

 wxEND_PROPERTIES_TABLE()
 
 wxBEGIN_HANDLERS_TABLE(wxComboBox)
 wxEND_PROPERTIES_TABLE()
 
 wxBEGIN_HANDLERS_TABLE(wxComboBox)


@@ -127,7 +127,7 @@ LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd,
 // ---------------------------------------------------------------------------
 
 // the pointer to standard radio button wnd proc
 // ---------------------------------------------------------------------------
 
 // the pointer to standard radio button wnd proc

-static WXFARPROC gs_wndprocEdit = (WXFARPROC)NULL;
+static WNDPROC gs_wndprocEdit = (WNDPROC)NULL;

 
 // ============================================================================
 // implementation
 
 // ============================================================================
 // implementation


@@ -213,30 +213,28 @@ LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd,
     return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam);
 }
 
     return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam);
 }
 

-WXHBRUSH wxComboBox::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
-                               WXUINT WXUNUSED(message),
-                               WXWPARAM WXUNUSED(wParam),
-                               WXLPARAM WXUNUSED(lParam)
-    )
-{
-    HDC hdc = (HDC)pDC;
-    wxColour colBack = GetBackgroundColour();
-
-    if (!IsEnabled())
-        colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
-
-    ::SetBkColor(hdc, wxColourToRGB(colBack));
-    ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
+// ----------------------------------------------------------------------------
+// wxComboBox callbacks
+// ----------------------------------------------------------------------------

 
 

-    wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
+WXLRESULT wxComboBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+{
+    // handle WM_CTLCOLOR messages from our EDIT control to be able to set its
+    // colour correctly (to be the same as our own one)
+    switch ( nMsg )
+    {
+        case CB_SETCURSEL:
+            // Selection was set with SetSelection.  Update the value too.
+            if ((int)wParam > GetCount())
+                m_value = wxEmptyString;
+            else
+                m_value = GetString(wParam);
+            break;
+    }

 
 

-    return (WXHBRUSH)brush->GetResourceHandle();
+    return wxChoice::MSWWindowProc(nMsg, wParam, lParam);

 }
 
 }
 

-// ----------------------------------------------------------------------------
-// wxComboBox
-// ----------------------------------------------------------------------------
-

 bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)
 {
     switch ( msg )
 bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)
 {
     switch ( msg )


@@ -253,7 +251,7 @@ bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)
                 ProcessCommand(event);
             }
 
                 ProcessCommand(event);
             }
 

-            return HandleChar(wParam, lParam, TRUE /* isASCII */);
+            return HandleChar(wParam, lParam, true /* isASCII */);

 
         case WM_KEYDOWN:
             return HandleKeyDown(wParam, lParam);
 
         case WM_KEYDOWN:
             return HandleKeyDown(wParam, lParam);


@@ -268,7 +266,7 @@ bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)
             return HandleKillFocus((WXHWND)wParam);
     }
 
             return HandleKillFocus((WXHWND)wParam);
     }
 

-    return FALSE;
+    return false;

 }
 
 bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 }
 
 bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))


@@ -279,18 +277,30 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
     {
         case CBN_SELCHANGE:
             sel = GetSelection();
     {
         case CBN_SELCHANGE:
             sel = GetSelection();

-            if ( sel > -1 )
+
+            // somehow we get 2 CBN_SELCHANGE events with the same index when
+            // the user selects an item in the combobox -- ignore duplicates
+            if ( sel > -1 && sel != m_selectionOld )

             {
             {

-                value = GetString(sel);
+                m_selectionOld = sel;
+
+                // GetValue() would still return the old value from here but
+                // according to the docs we should return the new value if the
+                // user calls it in his event handler, so update internal
+                // m_value
+                m_value = GetString(sel);

 
                 wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId());
                 event.SetInt(sel);
                 event.SetEventObject(this);
 
                 wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId());
                 event.SetInt(sel);
                 event.SetEventObject(this);

-                event.SetString(value);
+                event.SetString(m_value);

                 ProcessCommand(event);
             }
                 ProcessCommand(event);
             }

-            else
+            else // no valid selection

             {
             {

+                m_selectionOld = sel;
+
+                // hence no EVT_TEXT neither

                 break;
             }
 
                 break;
             }
 


@@ -307,25 +317,21 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
                 // want the new one)
                 if ( sel == -1 )
                 {
                 // want the new one)
                 if ( sel == -1 )
                 {

-                    value = GetValue();
+                    m_value = wxGetWindowText(GetHwnd());

                 }
                 else // we're synthesizing text updated event from sel change
                 {
                 }
                 else // we're synthesizing text updated event from sel change
                 {

-                    // We need to retrieve the current selection because the user
-                    // may have changed it in the previous handler (for CBN_SELCHANGE
-                    // above).
+                    // We need to retrieve the current selection because the
+                    // user may have changed it in the previous handler (for
+                    // CBN_SELCHANGE above).

                     sel = GetSelection();
                     if ( sel > -1 )
                     {
                     sel = GetSelection();
                     if ( sel > -1 )
                     {

-                        value = GetString(sel);
+                        m_value = GetString(sel);

                     }
                     }

-                    // we need to do this because the user code expects
-                    // wxComboBox::GetValue() to return the new value from
-                    // "text updated" handler but it hadn't been updated yet
-                    SetValue(value);

                 }
 
                 }
 

-                event.SetString(value);
+                event.SetString(m_value);

                 event.SetEventObject(this);
                 ProcessCommand(event);
             }
                 event.SetEventObject(this);
                 ProcessCommand(event);
             }


@@ -333,8 +339,8 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
     }
 
     // there is no return value for the CBN_ notifications, so always return
     }
 
     // there is no return value for the CBN_ notifications, so always return

-    // FALSE from here to pass the message to DefWindowProc()
-    return FALSE;
+    // false from here to pass the message to DefWindowProc()
+    return false;

 }
 
 WXHWND wxComboBox::GetEditHWND() const
 }
 
 WXHWND wxComboBox::GetEditHWND() const


@@ -355,6 +361,10 @@ WXHWND wxComboBox::GetEditHWND() const
     return (WXHWND)hwndEdit;
 }
 
     return (WXHWND)hwndEdit;
 }
 

+// ----------------------------------------------------------------------------
+// wxComboBox creation
+// ----------------------------------------------------------------------------
+

 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
                         const wxString& value,
                         const wxPoint& pos,
 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
                         const wxString& value,
                         const wxPoint& pos,


@@ -367,78 +377,88 @@ bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
     // pretend that wxComboBox is hidden while it is positioned and resized and
     // show it only right before leaving this method because otherwise there is
     // some noticeable flicker while the control rearranges itself
     // pretend that wxComboBox is hidden while it is positioned and resized and
     // show it only right before leaving this method because otherwise there is
     // some noticeable flicker while the control rearranges itself

-    m_isShown = FALSE;
-
-    // first create wxWin object
-    if ( !CreateControl(parent, id, pos, size, style, validator, name) )
-        return FALSE;
-
-    // get the right style
-    long msStyle = WS_TABSTOP | WS_VSCROLL | WS_HSCROLL |
-                   CBS_AUTOHSCROLL | CBS_NOINTEGRALHEIGHT /* | WS_CLIPSIBLINGS */;
-    if ( style & wxCB_READONLY )
-        msStyle |= CBS_DROPDOWNLIST;
-#ifndef __WXWINCE__
-    else if ( style & wxCB_SIMPLE )
-        msStyle |= CBS_SIMPLE; // A list (shown always) and edit control
-#endif
-    else
-        msStyle |= CBS_DROPDOWN;
-
-    if ( style & wxCB_SORT )
-        msStyle |= CBS_SORT;
-
-    if ( style & wxCLIP_SIBLINGS )
-        msStyle |= WS_CLIPSIBLINGS;
-
-
-    // and now create the MSW control
-    if ( !MSWCreateControl(_T("COMBOBOX"), msStyle) )
-        return FALSE;
+    m_isShown = false;

 
 

-    // A choice/combobox normally has a white background (or other, depending
-    // on global settings) rather than inheriting the parent's background colour.
-    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
+    if ( !CreateAndInit(parent, id, pos, size, n, choices, style,
+                        validator, name) )
+        return false;

 
 

-    for ( int i = 0; i < n; i++ )
-    {
-        Append(choices[i]);
-    }
-
-    if ( !value.IsEmpty() )
-    {
+    // we shouldn't call SetValue() for an empty string because this would
+    // (correctly) result in an assert with a read only combobox and is useless
+    // for the other ones anyhow
+    if ( !value.empty() )

         SetValue(value);
         SetValue(value);

-    }
-
-    // do this after appending the values to the combobox so that autosizing
-    // works correctly
-    SetSize(pos.x, pos.y, size.x, size.y);

 
     // a (not read only) combobox is, in fact, 2 controls: the combobox itself
     // and an edit control inside it and if we want to catch events from this
     // edit control, we must subclass it as well
     if ( !(style & wxCB_READONLY) )
     {
 
     // a (not read only) combobox is, in fact, 2 controls: the combobox itself
     // and an edit control inside it and if we want to catch events from this
     // edit control, we must subclass it as well
     if ( !(style & wxCB_READONLY) )
     {

-        gs_wndprocEdit = (WXFARPROC)::SetWindowLong
-                                      (
-                                        (HWND)GetEditHWND(),
-                                        GWL_WNDPROC,
-                                        (LPARAM)wxComboEditWndProc
-                                      );
+        gs_wndprocEdit = wxSetWindowProc((HWND)GetEditHWND(),
+                                         wxComboEditWndProc);

     }
 
     // and finally, show the control
     }
 
     // and finally, show the control

-    Show(TRUE);
+    Show(true);
+
+    return true;
+}
+
+bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
+                        const wxString& value,
+                        const wxPoint& pos,
+                        const wxSize& size,
+                        const wxArrayString& choices,
+                        long style,
+                        const wxValidator& validator,
+                        const wxString& name)
+{
+    wxCArrayString chs(choices);
+    return Create(parent, id, value, pos, size, chs.GetCount(),
+                  chs.GetStrings(), style, validator, name);
+}
+
+WXDWORD wxComboBox::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+    // we never have an external border
+    WXDWORD msStyle = wxChoice::MSWGetStyle
+                      (
+                        (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
+                      );
+
+    // remove the style always added by wxChoice
+    msStyle &= ~CBS_DROPDOWNLIST;
+
+    if ( style & wxCB_READONLY )
+        msStyle |= CBS_DROPDOWNLIST;
+#ifndef __WXWINCE__
+    else if ( style & wxCB_SIMPLE )
+        msStyle |= CBS_SIMPLE; // A list (shown always) and edit control
+#endif
+    else
+        msStyle |= CBS_DROPDOWN;

 
 

-    return TRUE;
+    // there is no reason to not always use CBS_AUTOHSCROLL, so do use it
+    msStyle |= CBS_AUTOHSCROLL;
+
+    // NB: we used to also add CBS_NOINTEGRALHEIGHT here but why?
+
+    return msStyle;

 }
 
 }
 

+// ----------------------------------------------------------------------------
+// wxComboBox text control-like methods
+// ----------------------------------------------------------------------------
+

 void wxComboBox::SetValue(const wxString& value)
 {
     if ( HasFlag(wxCB_READONLY) )
         SetStringSelection(value);
     else
         SetWindowText(GetHwnd(), value.c_str());
 void wxComboBox::SetValue(const wxString& value)
 {
     if ( HasFlag(wxCB_READONLY) )
         SetStringSelection(value);
     else
         SetWindowText(GetHwnd(), value.c_str());

+
+    m_value = value;
+    m_selectionOld = GetSelection();

 }
 
 // Clipboard operations
 }
 
 // Clipboard operations


@@ -540,7 +560,7 @@ void wxComboBox::SetSelection(long from, long to)
     long fromChar = from;
     long toChar = to;
     // if from and to are both -1, it means
     long fromChar = from;
     long toChar = to;
     // if from and to are both -1, it means

-    // (in wxWindows) that all text should be selected.
+    // (in wxWidgets) that all text should be selected.

     // This translates into Windows convention
     if ((from == -1) && (to == -1))
     {
     // This translates into Windows convention
     if ((from == -1) && (to == -1))
     {


@@ -548,18 +568,25 @@ void wxComboBox::SetSelection(long from, long to)
       toChar = -1;
     }
 
       toChar = -1;
     }
 

-    if (
-#ifdef __WIN32__
-    SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar))
-#else // Win16
-    SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)fromChar, (LPARAM)toChar)
-#endif
-        == CB_ERR )
+    if ( SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)) == CB_ERR )

     {
         wxLogDebug(_T("CB_SETEDITSEL failed"));
     }
 }
 
     {
         wxLogDebug(_T("CB_SETEDITSEL failed"));
     }
 }
 

-#endif
- // wxUSE_COMBOBOX
+void wxComboBox::GetSelection(long* from, long* to) const
+{
+    DWORD dwStart, dwEnd;
+    ::SendMessage(GetHwnd(), CB_GETEDITSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
+
+    *from = dwStart;
+    *to = dwEnd;
+}
+
+int wxComboBox::GetSelection() const
+{   
+    return wxChoice::GetSelection();    
+}
+
+#endif // wxUSE_COMBOBOX