// Modified by: Vadim Zeitlin to derive from wxChoiceBase
// Created: 04/01/98
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// Copyright: (c) Julian Smart
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
#pragma hdrstop
#endif
+#if wxUSE_CHOICE
+
#ifndef WX_PRECOMP
#include "wx/choice.h"
#include "wx/utils.h"
#include "wx/log.h"
+ #include "wx/brush.h"
+ #include "wx/settings.h"
#endif
#include "wx/msw/private.h"
-#if !USE_SHARED_LIBRARY
- IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
-#endif
+IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
// ============================================================================
// implementation
if ( !CreateControl(parent, id, pos, size, style, validator, name) )
return FALSE;
- long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_TABSTOP | WS_VISIBLE;
+ long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_TABSTOP | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL /* | WS_CLIPSIBLINGS */;
if ( style & wxCB_SORT )
msStyle |= CBS_SORT;
- // the experience shows that wxChoice vs. wxComboBox distinction confuses
+ if ( style & wxCLIP_SIBLINGS )
+ msStyle |= WS_CLIPSIBLINGS;
+
+
+ // Experience shows that wxChoice vs. wxComboBox distinction confuses
// quite a few people - try to help them
wxASSERT_MSG( !(style & wxCB_DROPDOWN) &&
!(style & wxCB_READONLY) &&
!(style & wxCB_SIMPLE),
- _T("this style flag is ignored by wxChoice, you "
- "probably want to use a wxComboBox") );
+ _T("this style flag is ignored by wxChoice, you ")
+ _T("probably want to use a wxComboBox") );
- if ( !MSWCreateControl(_T("COMBOBOX"), msStyle) )
+ if ( !MSWCreateControl(wxT("COMBOBOX"), msStyle) )
return 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));
+
for ( int i = 0; i < n; i++ )
{
Append(choices[i]);
return TRUE;
}
+wxChoice::~wxChoice()
+{
+ Free();
+}
+
// ----------------------------------------------------------------------------
// adding/deleting items to/from the list
// ----------------------------------------------------------------------------
-void wxChoice::DoAppend(const wxString& item)
+int wxChoice::DoAppend(const wxString& item)
+{
+ int n = (int)SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)item.c_str());
+ if ( n == CB_ERR )
+ {
+ wxLogLastError(wxT("SendMessage(CB_ADDSTRING)"));
+ }
+
+ return n;
+}
+
+int wxChoice::DoInsert(const wxString& item, int pos)
{
- SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)item.c_str());
+ wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
+ wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
+
+ int n = (int)SendMessage(GetHwnd(), CB_INSERTSTRING, pos, (LONG)item.c_str());
+ if ( n == CB_ERR )
+ {
+ wxLogLastError(wxT("SendMessage(CB_INSERTSTRING)"));
+ }
+
+ return n;
}
void wxChoice::Delete(int n)
{
- wxCHECK_RET( n < GetCount(), _T("invalid item index in wxChoice::Delete") );
+ wxCHECK_RET( n < GetCount(), wxT("invalid item index in wxChoice::Delete") );
+
+ if ( HasClientObjectData() )
+ {
+ delete GetClientObject(n);
+ }
SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
}
void wxChoice::Clear()
{
+ Free();
+
SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);
}
+void wxChoice::Free()
+{
+ if ( HasClientObjectData() )
+ {
+ size_t count = GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ delete GetClientObject(n);
+ }
+ }
+}
+
// ----------------------------------------------------------------------------
// selection
// ----------------------------------------------------------------------------
#endif // Watcom/!Watcom
}
+void wxChoice::SetString(int n, const wxString& s)
+{
+ wxCHECK_RET( n >= 0 && n < GetCount(),
+ wxT("invalid item index in wxChoice::SetString") );
+
+ // we have to delete and add back the string as there is no way to change a
+ // string in place
+
+ // we need to preserve the client data
+ void *data;
+ if ( m_clientDataItemsType != wxClientData_None )
+ {
+ data = DoGetItemClientData(n);
+ }
+ else // no client data
+ {
+ data = NULL;
+ }
+
+ ::SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
+ ::SendMessage(GetHwnd(), CB_INSERTSTRING, n, (LPARAM)s.c_str() );
+
+ if ( data )
+ {
+ DoSetItemClientData(n, data);
+ }
+ //else: it's already NULL by default
+}
+
wxString wxChoice::GetString(int n) const
{
- size_t len = (size_t)::SendMessage(GetHwnd(), CB_GETLBTEXTLEN, n, 0);
+ int len = (int)::SendMessage(GetHwnd(), CB_GETLBTEXTLEN, n, 0);
+
wxString str;
- if ( ::SendMessage(GetHwnd(), CB_GETLBTEXT, n,
- (LPARAM)str.GetWriteBuf(len)) == CB_ERR )
+ if ( len != CB_ERR && len > 0 )
{
- wxLogLastError("SendMessage(CB_GETLBTEXT)");
+ if ( ::SendMessage
+ (
+ GetHwnd(),
+ CB_GETLBTEXT,
+ n,
+ (LPARAM)(wxChar *)wxStringBuffer(str, len)
+ ) == CB_ERR )
+ {
+ wxLogLastError(wxT("SendMessage(CB_GETLBTEXT)"));
+ }
+
+ str.UngetWriteBuf();
}
- str.UngetWriteBuf();
-
return str;
}
// client data
// ----------------------------------------------------------------------------
-void wxChoice::DoSetClientData( int n, void* clientData )
+void wxChoice::DoSetItemClientData( int n, void* clientData )
{
- if ( SendMessage(GetHwnd(), CB_SETITEMDATA, n, (LPARAM)clientData) == CB_ERR )
+ if ( ::SendMessage(GetHwnd(), CB_SETITEMDATA,
+ n, (LPARAM)clientData) == CB_ERR )
{
- wxLogLastError(_T("CB_SETITEMDATA"));
+ wxLogLastError(wxT("CB_SETITEMDATA"));
}
}
-void* wxChoice::DoGetClientData( int n ) const
+void* wxChoice::DoGetItemClientData( int n ) const
{
LPARAM rc = SendMessage(GetHwnd(), CB_GETITEMDATA, n, 0);
if ( rc == CB_ERR )
{
- wxLogLastError(_T("CB_GETITEMDATA"));
+ wxLogLastError(wxT("CB_GETITEMDATA"));
// unfortunately, there is no way to return an error code to the user
- rc = NULL;
+ rc = (LPARAM) NULL;
}
return (void *)rc;
}
-void wxChoice::DoSetClientObject( int n, wxClientData* clientData )
+void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
{
- DoSetClientData(n, clientData);
+ DoSetItemClientData(n, clientData);
}
-wxClientData* wxChoice::DoGetClientObject( int n ) const
+wxClientData* wxChoice::DoGetItemClientObject( int n ) const
{
- return (wxClientData *)DoGetClientData(n);
+ return (wxClientData *)DoGetItemClientData(n);
}
// ----------------------------------------------------------------------------
// wxMSW specific helpers
// ----------------------------------------------------------------------------
+void wxChoice::DoMoveWindow(int x, int y, int width, int height)
+{
+ // here is why this is necessary: if the width is negative, the combobox
+ // window proc makes the window of the size width*height instead of
+ // interpreting height in the usual manner (meaning the height of the drop
+ // down list - usually the height specified in the call to MoveWindow()
+ // will not change the height of combo box per se)
+ //
+ // this behaviour is not documented anywhere, but this is just how it is
+ // here (NT 4.4) and, anyhow, the check shouldn't hurt - however without
+ // the check, constraints/sizers using combos may break the height
+ // constraint will have not at all the same value as expected
+ if ( width < 0 )
+ return;
+
+ wxControl::DoMoveWindow(x, y, width, height);
+}
+
void wxChoice::DoSetSize(int x, int y,
- int width, int height,
+ int width, int WXUNUSED(height),
int sizeFlags)
{
// Ignore height parameter because height doesn't mean 'initially
// wxWindows interpretation is different; also, getting the size returns
// the _displayed_ size (NOT the drop down menu size) so
// setting-getting-setting size would not work.
+
wxControl::DoSetSize(x, y, width, -1, sizeFlags);
}
-wxSize wxChoice::DoGetBestSize()
+wxSize wxChoice::DoGetBestSize() const
{
// find the widest string
int wLine;
return FALSE;
}
- wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
- event.SetInt(GetSelection());
- event.SetEventObject(this);
- event.SetString(GetStringSelection());
- ProcessCommand(event);
+ int n = GetSelection();
+ if (n > -1)
+ {
+ wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
+ event.SetInt(n);
+ event.SetEventObject(this);
+ event.SetString(GetStringSelection());
+ if ( HasClientObjectData() )
+ event.SetClientObject( GetClientObject(n) );
+ else if ( HasClientUntypedData() )
+ event.SetClientData( GetClientData(n) );
+ ProcessCommand(event);
+ }
return TRUE;
}
+WXHBRUSH wxChoice::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()));
+
+ wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
+
+ return (WXHBRUSH)brush->GetResourceHandle();
+}
+
+#endif // wxUSE_CHOICE
projects / wxWidgets.git / blobdiff