// 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
+
#ifndef WX_PRECOMP
-#include "wx/choice.h"
-#include "wx/utils.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 , , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+ wxPROPERTY_COLLECTION( Choices , wxArrayString , wxString , AppendString , GetStrings , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+ wxPROPERTY( Selection ,int, SetSelection, GetSelection, , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+ wxPROPERTY_FLAGS( WindowStyle , wxChoiceStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 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(GetStringSelection());
- ProcessCommand(event);
-
- 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->GetBackgroundColour()) ;
- SetForegroundColour(parent->GetForegroundColour()) ;
- m_noStrings = 0;
+ // initialize wxControl
+ if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+ return FALSE;
- m_windowStyle = style;
+ // now create the real HWND
+ if ( !MSWCreateControl(wxT("COMBOBOX"), _T(""), pos, size) )
+ return FALSE;
- 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;
+ // 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));
- long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_HSCROLL | WS_VSCROLL
- | WS_TABSTOP | WS_VISIBLE;
- if (m_windowStyle & wxCB_SORT)
- msStyle |= CBS_SORT;
+ // initialize
+ for ( int i = 0; i < n; i++ )
+ {
+ Append(choices[i]);
+ }
- bool want3D;
- WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
+ return TRUE;
+}
- // Even with extended styles, need to combine with WS_BORDER
- // for them to look right.
- if ( want3D || wxStyleHasBorder(m_windowStyle) )
- msStyle |= WS_BORDER;
+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);
+}
- m_hWnd = (WXHWND)::CreateWindowEx(exStyle, "COMBOBOX", NULL,
- msStyle,
- 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
- wxGetInstance(), NULL);
+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;
+}
- wxCHECK_MSG( m_hWnd, FALSE, "Failed to create combobox" );
+wxChoice::~wxChoice()
+{
+ Free();
+}
-/*
-#if wxUSE_CTL3D
- if (want3D)
- {
- m_useCtl3D = TRUE;
- Ctl3dSubclassCtl(wx_combo); // Does CTL3D affect the combobox? I think not.
- }
-#endif
-*/
+// ----------------------------------------------------------------------------
+// adding/deleting items to/from the list
+// ----------------------------------------------------------------------------
- // Subclass again for purposes of dialog editing mode
- SubclassWin(m_hWnd);
+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)"));
+ }
+ else // ok
+ {
+ // we need to refresh our size in order to have enough space for the
+ // newly added items
+ UpdateVisibleHeight();
+ }
- SetFont(parent->GetFont());
+ return n;
+}
- int i;
- for (i = 0; i < n; i++)
- {
- Append(choices[i]);
- }
- SetSelection(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"));
- SetSize(x, y, width, height);
+ int n = (int)SendMessage(GetHwnd(), CB_INSERTSTRING, pos, (LONG)item.c_str());
+ if ( n == CB_ERR )
+ {
+ wxLogLastError(wxT("SendMessage(CB_INSERTSTRING)"));
+ }
+ else // ok
+ {
+ UpdateVisibleHeight();
+ }
- return TRUE;
+ return n;
}
-void wxChoice::Append(const wxString& item)
+void wxChoice::Delete(int n)
{
- SendMessage((HWND) GetHWND(), CB_ADDSTRING, 0, (LONG)(const char *)item);
+ wxCHECK_RET( n < GetCount(), wxT("invalid item index in wxChoice::Delete") );
- m_noStrings ++;
+ if ( HasClientObjectData() )
+ {
+ delete GetClientObject(n);
+ }
+
+ SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
+
+ UpdateVisibleHeight();
}
-void wxChoice::Delete(int n)
+void wxChoice::Clear()
{
- m_noStrings = (int)SendMessage((HWND) GetHWND(), CB_DELETESTRING, n, 0);
+ Free();
+
+ SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);
+
+ UpdateVisibleHeight();
}
-void wxChoice::Clear(void)
+void wxChoice::Free()
{
- SendMessage((HWND) GetHWND(), CB_RESETCONTENT, 0, 0);
-
- m_noStrings = 0;
+ 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::DoSetSize(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, & this->GetFont());
-
- int 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 (m_noStrings == 0)
+ if ( ::SendMessage(GetHwnd(), CB_SETITEMDATA,
+ n, (LPARAM)clientData) == CB_ERR )
{
- control_width = 100;
+ wxLogLastError(wxT("CB_SETITEMDATA"));
}
- else
+}
+
+void* wxChoice::DoGetItemClientData( int n ) const
+{
+ LPARAM rc = SendMessage(GetHwnd(), CB_GETITEMDATA, n, 0);
+ if ( rc == CB_ERR )
{
- int len, ht;
- int longest = 0;
- int i;
- for (i = 0; i < m_noStrings; i++)
- {
- wxString str(GetString(i));
- GetTextExtent(str, &len, &ht, NULL, NULL, & this->GetFont());
- if ( len > longest)
- longest = len;
- }
-
- control_width = longest + cx*5;
+ wxLogLastError(wxT("CB_GETITEMDATA"));
+
+ // unfortunately, there is no way to return an error code to the user
+ rc = (LPARAM) NULL;
}
- }
- else
- {
- // If non-default width...
- control_width = w1;
- }
-
-
- // Choice drop-down list depends on number of items (limited to 10)
- if (h1 <= 0)
- {
- if (m_noStrings == 0)
- h1 = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*10;
- else
- h1 = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*(wxMin(10, m_noStrings) + 1);
- }
-
- control_height = h1;
-
- // Calculations may have made text size too small
- if (control_height <= 0)
- control_height = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
-
- if (control_width <= 0)
- control_width = 100;
-
- MoveWindow((HWND)GetHWND(), x1, y1,
- control_width, control_height, TRUE);
+
+ return (void *)rc;
}
-WXHBRUSH wxChoice::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
- WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
+void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
{
- return 0;
+ DoSetItemClientData(n, clientData);
}
-long wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+wxClientData* wxChoice::DoGetItemClientObject( int n ) const
{
- switch (nMsg)
+ return (wxClientData *)DoGetItemClientData(n);
+}
+
+// ----------------------------------------------------------------------------
+// wxMSW specific helpers
+// ----------------------------------------------------------------------------
+
+int wxChoice::GetVisibleHeight() const
+{
+ return ::SendMessage(GetHwnd(), CB_GETITEMHEIGHT, (WPARAM)-1, 0);
+}
+
+void wxChoice::UpdateVisibleHeight()
+{
+ // be careful to not change the width here
+ DoSetSize(-1, -1, -1, GetVisibleHeight(), wxSIZE_USE_EXISTING);
+}
+
+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::DoGetSize(int *w, int *h) const
+{
+ wxControl::DoGetSize(w, h);
+
+ // we need to return only the height of the visible part, not the entire
+ // height in the Windows sense which includes the height of the drop down
+ // list as well
+ if ( h )
+ *h = GetVisibleHeight();
+}
+
+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 != -1 )
{
-/*
- 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 > 39 )
+ nItems = 39;
+
+ // 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);
+
+ // 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 != -1 )
+ {
+ const int hVisibleCurrent = GetVisibleHeight();
+ if ( hVisibleCurrent != heightOrig )
{
- wxCommandEvent event(wxEVENT_TYPE_TEXT_ENTER_COMMAND);
- event.commandString = ((wxTextCtrl *)item)->GetValue();
- event.eventObject = item;
- item->ProcessCommand(event);
- return FALSE;
+ SendMessage(GetHwnd(), CB_SETITEMHEIGHT, (WPARAM)-1, heightOrig);
}
- 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;
- }
+wxSize wxChoice::DoGetBestSize() const
+{
+ // 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;
}
- return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
+ // 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, GetVisibleHeight());
}
-wxString wxChoice::GetStringSelection (void) const
+long wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
{
- int sel = GetSelection ();
- if (sel > -1)
- return wxString(this->GetString (sel));
- else
- return wxString("");
+ if ( nMsg == 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;
+ }
+
+ return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
}
-bool wxChoice::SetStringSelection (const wxString& s)
+bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
{
- int sel = FindString (s);
- if (sel > -1)
+ if ( param != CBN_SELCHANGE)
+ {
+ // "selection changed" is the only event we're after
+ return FALSE;
+ }
+
+ int n = GetSelection();
+ if (n > -1)
{
- SetSelection (sel);
- return TRUE;
+ 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);
}
- else
- return FALSE;
+
+ return TRUE;
}
-void wxChoice::Command(wxCommandEvent & event)
+WXHBRUSH wxChoice::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
+ WXUINT WXUNUSED(message),
+ WXWPARAM WXUNUSED(wParam),
+ WXLPARAM WXUNUSED(lParam)
+ )
{
- SetSelection (event.GetInt());
- ProcessCommand (event);
-}
+ 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