X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d50c81d3adb484655e394e4257cf76bcaf4038f2..5aab763c09c663ab5e5b92e533ca025e811f1bcf:/src/msw/choice.cpp diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp index 84d90c83b0..58a2f6a17d 100644 --- a/src/msw/choice.cpp +++ b/src/msw/choice.cpp @@ -28,17 +28,19 @@ #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 @@ -60,21 +62,29 @@ bool wxChoice::Create(wxWindow *parent, if ( !CreateControl(parent, id, pos, size, style, validator, name) ) return FALSE; - long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_TABSTOP | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL; + 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]); @@ -85,27 +95,57 @@ bool wxChoice::Create(wxWindow *parent, return TRUE; } +wxChoice::~wxChoice() +{ + Free(); +} + // ---------------------------------------------------------------------------- // adding/deleting items to/from the list // ---------------------------------------------------------------------------- -void wxChoice::DoAppend(const wxString& item) +int wxChoice::DoAppend(const wxString& item) { - SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)item.c_str()); + int n = (int)SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)item.c_str()); + if ( n == CB_ERR ) + { + wxLogLastError(wxT("SendMessage(CB_ADDSTRING)")); + } + + 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 // ---------------------------------------------------------------------------- @@ -151,15 +191,53 @@ int wxChoice::FindString(const wxString& s) const #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); - wxString str = ""; - if (len) { - if ( ::SendMessage(GetHwnd(), CB_GETLBTEXT, n, - (LPARAM)str.GetWriteBuf(len)) == CB_ERR ) { - wxLogLastError("SendMessage(CB_GETLBTEXT)"); + int len = (int)::SendMessage(GetHwnd(), CB_GETLBTEXTLEN, n, 0); + + wxString str; + if ( len != CB_ERR && len > 0 ) + { + if ( ::SendMessage + ( + GetHwnd(), + CB_GETLBTEXT, + n, + (LPARAM)(wxChar *)wxStringBuffer(str, len) + ) == CB_ERR ) + { + wxLogLastError(wxT("SendMessage(CB_GETLBTEXT)")); } + str.UngetWriteBuf(); } @@ -170,44 +248,63 @@ wxString wxChoice::GetString(int n) const // 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 = (LPARAM) 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 @@ -215,10 +312,11 @@ void wxChoice::DoSetSize(int x, int y, // 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; @@ -277,12 +375,60 @@ bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) 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), +#if wxUSE_CTL3D + WXUINT message, + WXWPARAM wParam, + WXLPARAM lParam +#else + WXUINT WXUNUSED(message), + WXWPARAM WXUNUSED(wParam), + WXLPARAM WXUNUSED(lParam) +#endif + ) +{ +#if wxUSE_CTL3D + if ( m_useCtl3D ) + { + HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam); + return (WXHBRUSH) hbrush; + } +#endif // wxUSE_CTL3D + + HDC hdc = (HDC)pDC; + if (GetParent()->GetTransparentBackground()) + SetBkMode(hdc, TRANSPARENT); + else + SetBkMode(hdc, OPAQUE); + + 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