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)
+ // TODO: 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;
+ m_value.clear();
else
m_value = GetString(wParam);
+ m_selectionOld = -1;
break;
+
+ case WM_SIZE:
+ {
+ // combobox selection sometimes spontaneously changes when its
+ // size changes, restore it to the old value if necessary
+ long fromOld, toOld;
+ GetSelection(&fromOld, &toOld);
+ WXLRESULT result = wxChoice::MSWWindowProc(nMsg, wParam, lParam);
+
+ long fromNew, toNew;
+ GetSelection(&fromNew, &toNew);
+
+ if ( fromOld != fromNew || toOld != toNew )
+ {
+ SetSelection(fromOld, toOld);
+ }
+
+ return result;
+ }
}
return wxChoice::MSWWindowProc(nMsg, wParam, lParam);
InitCommandEvent(event);
event.SetString(GetValue());
event.SetInt(GetSelection());
- ProcessCommand(event);
+ if ( ProcessCommand(event) )
+ {
+ // don't let the event through to the native control
+ // because it doesn't need it and may generate an annoying
+ // beep if it gets it
+ return true;
+ }
}
return HandleChar(wParam, lParam, true /* isASCII */);
int sel = -1;
switch ( param )
{
+ case CBN_SELENDOK:
case CBN_SELCHANGE:
sel = GetSelection();
- // somehow we get 2 CBN_SELCHANGE events with the same index when
- // the user selects an item in the combobox -- ignore duplicates
+ // we may sometimes get 2 CBN_SELCHANGE events or a CBN_SELENDOK
+ // before CBN_SELCHANGE with the same index when the user selects
+ // an item in the combobox -- ignore duplicates
if ( sel > -1 && sel != m_selectionOld )
{
m_selectionOld = sel;
if ( sel == -1 )
{
m_value = wxGetWindowText(GetHwnd());
+ m_selectionOld = -1;
}
else // we're synthesizing text updated event from sel change
{
(style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
);
+ // usually WS_TABSTOP is added by wxControl::MSWGetStyle() but as we're
+ // created hidden (see Create() above), it is not done for us but we still
+ // want to have this style
+ msStyle |= WS_TABSTOP;
+
// remove the style always added by wxChoice
msStyle &= ~CBS_DROPDOWNLIST;
bool wxComboBox::CanUndo() const
{
+ if (!IsEditable())
+ return false;
+
HWND hEditWnd = (HWND) GetEditHWND() ;
if ( hEditWnd )
return ::SendMessage(hEditWnd, EM_CANUNDO, 0, 0) != 0;
bool wxComboBox::CanRedo() const
{
+ if (!IsEditable())
+ return false;
+
HWND hEditWnd = (HWND) GetEditHWND() ;
if ( hEditWnd )
return ::SendMessage(hEditWnd, EM_CANUNDO, 0, 0) != 0;
bool wxComboBox::CanCut() const
{
- return CanCopy() && IsEditable();
+ return IsEditable() && CanCopy() ;
}
bool wxComboBox::CanPaste() const
// setting insertion point doesn't make sense for read only comboboxes
if ( !(GetWindowStyle() & wxCB_READONLY) )
{
- long pos = GetLastPosition();
+ wxTextPos pos = GetLastPosition();
SetInsertionPoint(pos);
}
}
long wxComboBox::GetInsertionPoint() const
{
-#ifdef __WIN32__
- DWORD Pos=(DWORD)SendMessage(GetHwnd(), CB_GETEDITSEL, 0, 0L);
- return Pos&0xFFFF;
-#else
- return 0;
-#endif
+ // CB_GETEDITSEL returns the index of the last character after selection in
+ // its high-order word
+ DWORD pos= (DWORD)::SendMessage(GetHwnd(), CB_GETEDITSEL, 0, 0L);
+
+ return HIWORD(pos);
}
-long wxComboBox::GetLastPosition() const
+wxTextPos wxComboBox::GetLastPosition() const
{
HWND hEditWnd = (HWND) GetEditHWND();
// Get number of characters in the last (only) line. We'll add this to the character
// index for the last line, 1st position.
- int lineLength = (int)SendMessage(hEditWnd, EM_LINELENGTH, (WPARAM) 0, (LPARAM)0L);
+ wxTextPos lineLength = (wxTextPos)SendMessage(hEditWnd, EM_LINELENGTH, (WPARAM) 0, (LPARAM)0L);
- return (long)(lineLength);
+ return lineLength;
}
void wxComboBox::Replace(long from, long to, const wxString& value)
void wxComboBox::SetSelection(long from, long to)
{
- HWND hWnd = GetHwnd();
- long fromChar = from;
- long toChar = to;
- // if from and to are both -1, it means
- // (in wxWidgets) that all text should be selected.
- // This translates into Windows convention
- if ((from == -1) && (to == -1))
+ // if from and to are both -1, it means (in wxWidgets) that all text should
+ // be selected, translate this into Windows convention
+ if ( (from == -1) && (to == -1) )
{
- fromChar = 0;
- toChar = -1;
+ from = 0;
}
- if ( SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)) == CB_ERR )
+ if ( SendMessage(GetHwnd(), CB_SETEDITSEL,
+ 0, (LPARAM)MAKELONG(from, to)) == CB_ERR )
{
wxLogDebug(_T("CB_SETEDITSEL failed"));
}
void wxComboBox::GetSelection(long* from, long* to) const
{
DWORD dwStart, dwEnd;
- ::SendMessage(GetHwnd(), CB_GETEDITSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
-
- *from = dwStart;
- *to = dwEnd;
+ if ( ::SendMessage(GetHwnd(), CB_GETEDITSEL,
+ (WPARAM)&dwStart, (LPARAM)&dwEnd) == CB_ERR )
+ {
+ *from =
+ *to = 0;
+ }
+ else
+ {
+ *from = dwStart;
+ *to = dwEnd;
+ }
}
int wxComboBox::GetSelection() const
projects / wxWidgets.git / blobdiff