X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5de76427c87d8289f5c343cef16e9375056fc49f..0148745bb7a9b1e1046229577fbd802eb9f03e8f:/src/msw/choice.cpp diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp index 18949f0212..0848b22251 100644 --- a/src/msw/choice.cpp +++ b/src/msw/choice.cpp @@ -2,341 +2,622 @@ // Name: choice.cpp // Purpose: wxChoice // Author: Julian Smart -// Modified by: +// 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 ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "choice.h" +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) + #pragma implementation "choice.h" #endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif +#if wxUSE_CHOICE && !(defined(__SMARTPHONE__) && defined(__WXWINCE__)) + #ifndef WX_PRECOMP -#include "wx/choice.h" + #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 +#if wxUSE_EXTENDED_RTTI +WX_DEFINE_FLAGS( wxChoiceStyle ) + +wxBEGIN_FLAGS( wxChoiceStyle ) + // new style border flags, we put them first to + // use them for streaming out + wxFLAGS_MEMBER(wxBORDER_SIMPLE) + wxFLAGS_MEMBER(wxBORDER_SUNKEN) + wxFLAGS_MEMBER(wxBORDER_DOUBLE) + wxFLAGS_MEMBER(wxBORDER_RAISED) + wxFLAGS_MEMBER(wxBORDER_STATIC) + wxFLAGS_MEMBER(wxBORDER_NONE) + + // old style border flags + wxFLAGS_MEMBER(wxSIMPLE_BORDER) + wxFLAGS_MEMBER(wxSUNKEN_BORDER) + wxFLAGS_MEMBER(wxDOUBLE_BORDER) + wxFLAGS_MEMBER(wxRAISED_BORDER) + wxFLAGS_MEMBER(wxSTATIC_BORDER) + wxFLAGS_MEMBER(wxBORDER) + + // standard window styles + wxFLAGS_MEMBER(wxTAB_TRAVERSAL) + wxFLAGS_MEMBER(wxCLIP_CHILDREN) + wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW) + wxFLAGS_MEMBER(wxWANTS_CHARS) + wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE) + wxFLAGS_MEMBER(wxALWAYS_SHOW_SB ) + wxFLAGS_MEMBER(wxVSCROLL) + wxFLAGS_MEMBER(wxHSCROLL) + +wxEND_FLAGS( wxChoiceStyle ) + +IMPLEMENT_DYNAMIC_CLASS_XTI(wxChoice, wxControl,"wx/choice.h") + +wxBEGIN_PROPERTIES_TABLE(wxChoice) + wxEVENT_PROPERTY( Select , wxEVT_COMMAND_CHOICE_SELECTED , wxCommandEvent ) + + 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( Selection ,int, SetSelection, GetSelection, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) + wxPROPERTY_FLAGS( WindowStyle , wxChoiceStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style +wxEND_PROPERTIES_TABLE() + +wxBEGIN_HANDLERS_TABLE(wxChoice) +wxEND_HANDLERS_TABLE() + +wxCONSTRUCTOR_4( wxChoice , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size ) +#else IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl) #endif +/* + TODO PROPERTIES + selection (long) + content (list) + item +*/ -bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) +// ============================================================================ +// implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// creation +// ---------------------------------------------------------------------------- + +bool wxChoice::Create(wxWindow *parent, + wxWindowID id, + const wxPoint& pos, + const wxSize& size, + int n, const wxString choices[], + long style, + const wxValidator& validator, + const wxString& name) { - if (param == CBN_SELCHANGE) - { - wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId); - event.SetInt(GetSelection()); - event.SetEventObject(this); - event.SetString(copystring(GetStringSelection())); - ProcessCommand(event); - delete[] event.GetString(); - return TRUE; - } - else return FALSE; + // 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 ") + _T("probably want to use a wxComboBox") ); + + return CreateAndInit(parent, id, pos, size, n, choices, style, + validator, name); } -bool wxChoice::Create(wxWindow *parent, wxWindowID id, - const wxPoint& pos, - const wxSize& size, - int n, const wxString choices[], - long style, - const wxValidator& validator, - const wxString& name) +bool wxChoice::CreateAndInit(wxWindow *parent, + wxWindowID id, + const wxPoint& pos, + const wxSize& size, + int n, const wxString choices[], + long style, + const wxValidator& validator, + const wxString& name) { - SetName(name); - SetValidator(validator); - if (parent) parent->AddChild(this); - SetBackgroundColour(parent->GetDefaultBackgroundColour()) ; - SetForegroundColour(parent->GetDefaultForegroundColour()) ; - no_strings = n; - - m_windowStyle = style; - - if ( id == -1 ) - m_windowId = (int)NewControlId(); - else - m_windowId = id; - - int x = pos.x; - int y = pos.y; - int width = size.x; - int height = size.y; - - long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_HSCROLL | WS_VSCROLL - | WS_TABSTOP | WS_VISIBLE; - if (m_windowStyle & wxCB_SORT) - msStyle |= CBS_SORT; - - bool want3D; - WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ; - - // Even with extended styles, need to combine with WS_BORDER - // for them to look right. - if (want3D || (m_windowStyle & wxSIMPLE_BORDER) || (m_windowStyle & wxRAISED_BORDER) || - (m_windowStyle & wxSUNKEN_BORDER) || (m_windowStyle & wxDOUBLE_BORDER)) - msStyle |= WS_BORDER; - - HWND wx_combo = CreateWindowEx(exStyle, "COMBOBOX", NULL, - msStyle, - 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, - wxGetInstance(), NULL); -/* -#if CTL3D - if (want3D) - { - m_useCtl3D = TRUE; - Ctl3dSubclassCtl(wx_combo); // Does CTL3D affect the combobox? I think not. - } -#endif -*/ + // initialize wxControl + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) + return false; + + // now create the real HWND + if ( !MSWCreateControl(wxT("COMBOBOX"), _T(""), pos, size) ) + return false; - m_hWnd = (WXHWND) wx_combo; - // Subclass again for purposes of dialog editing mode - SubclassWin((WXHWND) wx_combo); + // choice/combobox normally has "white" (depends on colour scheme, of + // course) background rather than inheriting the parent's background + SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW)); - SetFont(* parent->GetFont()); + // initialize the controls contents + for ( int i = 0; i < n; i++ ) + { + Append(choices[i]); + } - int i; - for (i = 0; i < n; i++) - SendMessage(wx_combo, CB_INSERTSTRING, i, (LONG)(const char *)choices[i]); - SendMessage(wx_combo, CB_SETCURSEL, i, 0); + // and now we may finally size the control properly (if needed) + SetBestSize(size); - SetSize(x, y, width, height); + return true; +} - return TRUE; +bool wxChoice::Create(wxWindow *parent, + wxWindowID id, + const wxPoint& pos, + const wxSize& size, + const wxArrayString& choices, + long style, + const wxValidator& validator, + const wxString& name) +{ + wxCArrayString chs(choices); + return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(), + style, validator, name); } -void wxChoice::Append(const wxString& item) +bool wxChoice::MSWShouldPreProcessMessage(WXMSG *pMsg) { - SendMessage((HWND) GetHWND(), CB_ADDSTRING, 0, (LONG)(const char *)item); + MSG *msg = (MSG *) pMsg; - no_strings ++; + // if the dropdown list is visible, don't preprocess certain keys + if ( msg->message == WM_KEYDOWN + && (msg->wParam == VK_ESCAPE || msg->wParam == VK_RETURN) ) + { + if (::SendMessage(GetHwndOf(this), CB_GETDROPPEDSTATE, 0, 0)) + { + return false; + } + } + + return wxControl::MSWShouldPreProcessMessage(pMsg); +} + +WXDWORD wxChoice::MSWGetStyle(long style, WXDWORD *exstyle) const +{ + // we never have an external border + WXDWORD msStyle = wxControl::MSWGetStyle + ( + (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle + ); + + // WS_CLIPSIBLINGS is useful with wxChoice and doesn't seem to result in + // any problems + msStyle |= WS_CLIPSIBLINGS; + + // wxChoice-specific styles + msStyle |= CBS_DROPDOWNLIST | WS_HSCROLL | WS_VSCROLL; + if ( style & wxCB_SORT ) + msStyle |= CBS_SORT; + + return msStyle; +} + +wxChoice::~wxChoice() +{ + Free(); +} + +// ---------------------------------------------------------------------------- +// adding/deleting items to/from the list +// ---------------------------------------------------------------------------- + +int wxChoice::DoAppend(const wxString& item) +{ + int n = (int)SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LPARAM)item.c_str()); + if ( n == CB_ERR ) + { + wxLogLastError(wxT("SendMessage(CB_ADDSTRING)")); + } + else // ok + { + // we need to refresh our size in order to have enough space for the + // newly added items + if ( !IsFrozen() ) + UpdateVisibleHeight(); + } + + return n; +} + +int wxChoice::DoInsert(const wxString& item, int pos) +{ + 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, (LPARAM)item.c_str()); + if ( n == CB_ERR ) + { + wxLogLastError(wxT("SendMessage(CB_INSERTSTRING)")); + } + else // ok + { + if ( !IsFrozen() ) + UpdateVisibleHeight(); + } + + return n; } void wxChoice::Delete(int n) { - no_strings = (int)SendMessage((HWND) GetHWND(), CB_DELETESTRING, n, 0); + wxCHECK_RET( n < GetCount(), wxT("invalid item index in wxChoice::Delete") ); + + if ( HasClientObjectData() ) + { + delete GetClientObject(n); + } + + SendMessage(GetHwnd(), CB_DELETESTRING, n, 0); + + if ( !IsFrozen() ) + UpdateVisibleHeight(); } -void wxChoice::Clear(void) +void wxChoice::Clear() { - SendMessage((HWND) GetHWND(), CB_RESETCONTENT, 0, 0); + Free(); - no_strings = 0; + SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0); + + if ( !IsFrozen() ) + UpdateVisibleHeight(); +} + +void wxChoice::Free() +{ + if ( HasClientObjectData() ) + { + size_t count = GetCount(); + for ( size_t n = 0; n < count; n++ ) + { + delete GetClientObject(n); + } + } } +// ---------------------------------------------------------------------------- +// selection +// ---------------------------------------------------------------------------- -int wxChoice::GetSelection(void) const +int wxChoice::GetSelection() const { - return (int)SendMessage((HWND) GetHWND(), CB_GETCURSEL, 0, 0); + return (int)SendMessage(GetHwnd(), CB_GETCURSEL, 0, 0); } void wxChoice::SetSelection(int n) { - SendMessage((HWND) GetHWND(), CB_SETCURSEL, n, 0); + SendMessage(GetHwnd(), CB_SETCURSEL, n, 0); +} + +// ---------------------------------------------------------------------------- +// string list functions +// ---------------------------------------------------------------------------- + +int wxChoice::GetCount() const +{ + return (int)SendMessage(GetHwnd(), CB_GETCOUNT, 0, 0); } int wxChoice::FindString(const wxString& s) const { #if defined(__WATCOMC__) && defined(__WIN386__) - // For some reason, Watcom in WIN386 mode crashes in the CB_FINDSTRINGEXACT message. - // Do it the long way instead. - char buf[512]; - for (int i = 0; i < Number(); i++) - { - int len = (int)SendMessage((HWND) GetHWND(), CB_GETLBTEXT, i, (LPARAM)(LPSTR)buf); - buf[len] = 0; - if (strcmp(buf, (const char *)s) == 0) - return i; - } - return -1; -#else - int pos = (int)SendMessage((HWND) GetHWND(), CB_FINDSTRINGEXACT, (WPARAM)-1, (LPARAM)(LPSTR)(const char *)s); - if (pos == LB_ERR) - return -1; - else - return pos; -#endif + // For some reason, Watcom in WIN386 mode crashes in the CB_FINDSTRINGEXACT message. + // wxChoice::Do it the long way instead. + int count = GetCount(); + for ( int i = 0; i < count; i++ ) + { + // as CB_FINDSTRINGEXACT is case insensitive, be case insensitive too + if ( GetString(i).IsSameAs(s, false) ) + return i; + } + + return wxNOT_FOUND; +#else // !Watcom + int pos = (int)SendMessage(GetHwnd(), CB_FINDSTRINGEXACT, + (WPARAM)-1, (LPARAM)s.c_str()); + + return pos == LB_ERR ? wxNOT_FOUND : pos; +#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 { - int len = (int)SendMessage((HWND) GetHWND(), CB_GETLBTEXT, n, (long)wxBuffer); - wxBuffer[len] = 0; - return wxString(wxBuffer); + 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)")); + } + } + + return str; } -void wxChoice::SetSize(int x, int y, int width, int height, int sizeFlags) +// ---------------------------------------------------------------------------- +// client data +// ---------------------------------------------------------------------------- + +void wxChoice::DoSetItemClientData( int n, void* clientData ) { - int currentX, currentY; - GetPosition(¤tX, ¤tY); - - int x1 = x; - int y1 = y; - int w1 = width; - int h1 = height; - - if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - x1 = currentX; - if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - y1 = currentY; - - AdjustForParentClientOrigin(x1, y1, sizeFlags); - - // If we're prepared to use the existing size, then... - if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO)) - { - GetSize(&w1, &h1); - } - - int cx; // button font dimensions - int cy; - wxGetCharSize(GetHWND(), &cx, &cy, GetFont()); - - float control_width, control_height; - - // Ignore height parameter because height doesn't - // mean 'initially displayed' height, it refers to the - // drop-down menu as well. The 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. - h1 = -1; - - // Deal with default size (using -1 values) - if (width <= 0) - { - // Find the longest string - if (no_strings == 0) - control_width = (float)100.0; - else + if ( ::SendMessage(GetHwnd(), CB_SETITEMDATA, + n, (LPARAM)clientData) == CB_ERR ) { - int len, ht; - float longest = (float)0.0; - int i; - for (i = 0; i < no_strings; i++) - { - wxString str(GetString(i)); - GetTextExtent(str, &len, &ht, NULL, NULL,GetFont()); - if ( len > longest) longest = len; - } - - control_width = (float)(int)(longest + cx*5); + wxLogLastError(wxT("CB_SETITEMDATA")); } - } +} + +void* wxChoice::DoGetItemClientData( int n ) const +{ + LPARAM rc = SendMessage(GetHwnd(), CB_GETITEMDATA, n, 0); + if ( rc == CB_ERR ) + { + wxLogLastError(wxT("CB_GETITEMDATA")); - // Choice drop-down list depends on number of items (limited to 10) - if (h1 <= 0) - { - if (no_strings == 0) - h1 = (int)(EDIT_CONTROL_FACTOR*cy*10.0); - else h1 = (int)(EDIT_CONTROL_FACTOR*cy*(wxMin(10, no_strings) + 1)); - } + // unfortunately, there is no way to return an error code to the user + rc = (LPARAM) NULL; + } - // If non-default width... - if (width >= 0) - control_width = (float)width; + return (void *)rc; +} - control_height = (float)h1; +void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData ) +{ + DoSetItemClientData(n, clientData); +} - // Calculations may have made text size too small - if (control_height <= 0) - control_height = (float)(int)(cy*EDIT_CONTROL_FACTOR) ; +wxClientData* wxChoice::DoGetItemClientObject( int n ) const +{ + return (wxClientData *)DoGetItemClientData(n); +} - if (control_width <= 0) - control_width = (float)100.0; +// ---------------------------------------------------------------------------- +// wxMSW specific helpers +// ---------------------------------------------------------------------------- - MoveWindow((HWND) GetHWND(), x1, y1, - (int)control_width, (int)control_height, TRUE); +void wxChoice::UpdateVisibleHeight() +{ + // be careful to not change the width here + DoSetSize(wxDefaultCoord, wxDefaultCoord, wxDefaultCoord, GetSize().y, wxSIZE_USE_EXISTING); } -WXHBRUSH wxChoice::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, - WXUINT message, WXWPARAM wParam, WXLPARAM lParam) +void wxChoice::DoMoveWindow(int x, int y, int width, int height) { - return 0; + // 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); } -long wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) +void wxChoice::DoGetSize(int *w, int *h) const { - switch (nMsg) + // this is weird: sometimes, the height returned by Windows is clearly the + // total height of the control including the drop down list -- but only + // sometimes, and normally it isn't... I have no idea about what to do with + // this + wxControl::DoGetSize(w, h); +} + +void wxChoice::DoSetSize(int x, int y, + int width, int height, + int sizeFlags) +{ + int heightOrig = height; + + // the height which we must pass to Windows should be the total height of + // the control including the drop down list while the height given to us + // is, of course, just the height of the permanently visible part of it + if ( height != wxDefaultCoord ) { -/* - case WM_GETDLGCODE: - { - if (GetWindowStyleFlag() & wxPROCESS_ENTER) - return DLGC_WANTALLKEYS; - break; - } -*/ -/* - case WM_CHAR: // Always an ASCII character - { - if (wParam == VK_RETURN) + // don't make the drop down list too tall, arbitrarily limit it to 40 + // items max and also don't leave it empty + size_t nItems = GetCount(); + if ( !nItems ) + nItems = 9; + else if ( nItems > 24 ) + nItems = 24; + + // add space for the drop down list + const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0); + height += hItem*(nItems + 1); + } + + wxControl::DoSetSize(x, y, width, height, sizeFlags); + + // I'm commenting this out since the code appears to make choices + // and comboxes too high when they have associated sizers. I'm sure this + // is not the end of the story, which is why I'm leaving it #if'ed out for + // now. JACS. +#if 0 + // if the height specified for the visible part of the control is + // different from the current one, we need to change it separately + // as it is not affected by normal WM_SETSIZE + if ( height != wxDefaultCoord ) + { + const int delta = heightOrig - GetSize().y; + if ( delta ) { - wxCommandEvent event(wxEVENT_TYPE_TEXT_ENTER_COMMAND); - event.commandString = ((wxTextCtrl *)item)->GetValue(); - event.eventObject = item; - item->ProcessCommand(event); - return FALSE; + int h = ::SendMessage(GetHwnd(), CB_GETITEMHEIGHT, (WPARAM)-1, 0); + SendMessage(GetHwnd(), CB_SETITEMHEIGHT, (WPARAM)-1, h + delta); } - break; - } -*/ - case WM_LBUTTONUP: - { - int x = (int)LOWORD(lParam); - int y = (int)HIWORD(lParam); - - // Ok, this is truly weird, but if a panel with a wxChoice loses the - // focus, then you get a *fake* WM_LBUTTONUP message - // with x = 65535 and y = 65535. - // Filter out this nonsense. - if (x == 65535 && y == 65535) - return Default(); - break; - } } - - return wxWindow::MSWWindowProc(nMsg, wParam, lParam); +#else + wxUnusedVar(heightOrig); +#endif } -wxString wxChoice::GetStringSelection (void) const +wxSize wxChoice::DoGetBestSize() const { - int sel = GetSelection (); - if (sel > -1) - return wxString(this->GetString (sel)); - else - return wxString(""); + // find the widest string + int wChoice = 0; + const size_t nItems = GetCount(); + for ( size_t i = 0; i < nItems; i++ ) + { + int wLine; + GetTextExtent(GetString(i), &wLine, NULL); + if ( wLine > wChoice ) + wChoice = wLine; + } + + // give it some reasonable default value if there are no strings in the + // list + if ( wChoice == 0 ) + wChoice = 100; + + // the combobox should be slightly larger than the widest string + wChoice += 5*GetCharWidth(); + + return wxSize(wChoice, EDIT_HEIGHT_FROM_CHAR_HEIGHT(GetCharHeight())); } -bool wxChoice::SetStringSelection (const wxString& s) +WXLRESULT wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { - int sel = FindString (s); - if (sel > -1) + switch ( nMsg ) { - SetSelection (sel); - return TRUE; + case WM_LBUTTONUP: + { + int x = (int)LOWORD(lParam); + int y = (int)HIWORD(lParam); + + // Ok, this is truly weird, but if a panel with a wxChoice + // loses the focus, then you get a *fake* WM_LBUTTONUP message + // with x = 65535 and y = 65535. Filter out this nonsense. + // + // VZ: I'd like to know how to reproduce this please... + if ( x == 65535 && y == 65535 ) + return 0; + } + break; + + // we have to handle both: one for the normal case and the other + // for readonly + case WM_CTLCOLOREDIT: + case WM_CTLCOLORLISTBOX: + case WM_CTLCOLORSTATIC: + { + WXWORD nCtlColor; + WXHDC hdc; + WXHWND hwnd; + UnpackCtlColor(wParam, lParam, &nCtlColor, &hdc, &hwnd); + + return (WXLRESULT)OnCtlColor(hdc, hwnd, nCtlColor, + nMsg, wParam, lParam); + } } - else - return FALSE; + + return wxWindow::MSWWindowProc(nMsg, wParam, lParam); } -void wxChoice::Command(wxCommandEvent & event) +bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) { - SetSelection (event.GetInt()); - ProcessCommand (event); + if ( param != CBN_SELCHANGE) + { + // "selection changed" is the only event we're after + return false; + } + + 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 && !(__SMARTPHONE__ && __WXWINCE__)