/////////////////////////////////////////////////////////////////////////////
-// Name: checkbox.cpp
+// Name: src/msw/checkbox.cpp
// Purpose: wxCheckBox
// Author: Julian Smart
// Modified by:
// 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 "checkbox.h"
-#endif
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
-#ifndef WX_PRECOMP
+#if wxUSE_CHECKBOX
+
#include "wx/checkbox.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/brush.h"
+ #include "wx/dcclient.h"
+ #include "wx/dcscreen.h"
+ #include "wx/settings.h"
#endif
-#include "wx/msw/private.h"
+#include "wx/msw/dc.h" // for wxDCTemp
+#include "wx/renderer.h"
+#include "wx/msw/uxtheme.h"
+#include "wx/msw/private/button.h"
+#include "wx/msw/missing.h"
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
-#if !USE_SHARED_LIBRARY
-IMPLEMENT_DYNAMIC_CLASS(wxCheckBox, wxControl)
-IMPLEMENT_DYNAMIC_CLASS(wxBitmapCheckBox, wxCheckBox)
+#ifndef BP_CHECKBOX
+ #define BP_CHECKBOX 3
#endif
-bool wxCheckBox::MSWCommand(WXUINT WXUNUSED(param), WXWORD WXUNUSED(id))
+// these values are defined in tmschema.h (except the first one)
+enum
{
- wxCommandEvent event(wxEVENT_TYPE_CHECKBOX_COMMAND, m_windowId);
- event.SetInt(GetValue());
- event.SetEventObject(this);
- ProcessCommand(event);
- return TRUE;
+ CBS_INVALID,
+ CBS_UNCHECKEDNORMAL,
+ CBS_UNCHECKEDHOT,
+ CBS_UNCHECKEDPRESSED,
+ CBS_UNCHECKEDDISABLED,
+ CBS_CHECKEDNORMAL,
+ CBS_CHECKEDHOT,
+ CBS_CHECKEDPRESSED,
+ CBS_CHECKEDDISABLED,
+ CBS_MIXEDNORMAL,
+ CBS_MIXEDHOT,
+ CBS_MIXEDPRESSED,
+ CBS_MIXEDDISABLED
+};
+
+// these are our own
+enum
+{
+ CBS_HOT_OFFSET = 1,
+ CBS_PRESSED_OFFSET = 2,
+ CBS_DISABLED_OFFSET = 3
+};
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxCheckBox creation
+// ----------------------------------------------------------------------------
+
+void wxCheckBox::Init()
+{
+ m_state = wxCHK_UNCHECKED;
+ m_isPressed =
+ m_isHot = false;
}
-// Single check box item
-bool wxCheckBox::Create(wxWindow *parent, wxWindowID id, const wxString& label,
- const wxPoint& pos,
- const wxSize& size, long style,
- const wxValidator& validator,
- const wxString& name)
+bool wxCheckBox::Create(wxWindow *parent,
+ wxWindowID id,
+ const wxString& label,
+ const wxPoint& pos,
+ const wxSize& size, long style,
+ const wxValidator& validator,
+ const wxString& name)
{
- SetName(name);
- SetValidator(validator);
- if (parent) parent->AddChild(this);
-
- SetBackgroundColour(parent->GetBackgroundColour()) ;
- SetForegroundColour(parent->GetForegroundColour()) ;
-
- m_windowStyle = style;
-
- wxString Label = label;
- if (Label == "")
- Label = " "; // Apparently needed or checkbox won't show
-
- if ( id == -1 )
- m_windowId = NewControlId();
- else
- m_windowId = id;
-
- int x = pos.x;
- int y = pos.y;
- int width = size.x;
- int height = size.y;
-
- long msStyle = BS_AUTOCHECKBOX | WS_TABSTOP | WS_CHILD | WS_VISIBLE;
- if ( style & wxALIGN_RIGHT )
- msStyle |= BS_LEFTTEXT;
-
- // We perhaps have different concepts of 3D here - a 3D border,
- // versus a 3D button.
- // So we only wish to give a border if this is specified
- // in the style.
- bool want3D;
- WXDWORD exStyle = Determine3DEffects(0, &want3D) ;
-
- // Even with extended styles, need to combine with WS_BORDER
- // for them to look right.
- if ( want3D || wxStyleHasBorder(m_windowStyle) )
- msStyle |= WS_BORDER;
-
- m_hWnd = (WXHWND)CreateWindowEx(exStyle, "BUTTON", Label,
- msStyle,
- 0, 0, 0, 0,
- (HWND)parent->GetHWND(), (HMENU)m_windowId,
- wxGetInstance(), NULL);
-
-#if CTL3D
- if (want3D)
- {
- Ctl3dSubclassCtl((HWND)m_hWnd);
- m_useCtl3D = TRUE;
- }
-#endif
+ Init();
+
+ WXValidateStyle(&style);
+ if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+ return false;
- // Subclass again for purposes of dialog editing mode
- SubclassWin(m_hWnd);
-
- SetFont(*parent->GetFont());
+ WXDWORD exstyle;
+ WXDWORD msStyle = MSWGetStyle(style, &exstyle);
- SetSize(x, y, width, height);
+ msStyle |= wxMSWButton::GetMultilineStyle(label);
- return TRUE;
+ return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, exstyle);
}
-void wxCheckBox::SetLabel(const wxString& label)
+WXDWORD wxCheckBox::MSWGetStyle(long style, WXDWORD *exstyle) const
{
- SetWindowText((HWND)GetHWND(), label);
+ // buttons never have an external border, they draw their own one
+ WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
+
+ if ( style & wxCHK_3STATE )
+ msStyle |= BS_3STATE;
+ else
+ msStyle |= BS_CHECKBOX;
+
+ if ( style & wxALIGN_RIGHT )
+ {
+ msStyle |= BS_LEFTTEXT | BS_RIGHT;
+ }
+
+ return msStyle;
}
-void wxCheckBox::SetSize(int x, int y, int width, int height, int sizeFlags)
+// ----------------------------------------------------------------------------
+// wxCheckBox geometry
+// ----------------------------------------------------------------------------
+
+wxSize wxCheckBox::DoGetBestClientSize() const
{
- 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);
-
- int current_width, cyf;
- HWND button = (HWND) GetHWND();
-
- int nLen = GetWindowTextLength(button);
- wxString str;
- GetWindowText(button, str.GetWriteBuf(nLen), nLen);
- str.UngetWriteBuf();
-
- if ( !str.IsEmpty() )
- {
- GetTextExtent(str, ¤t_width, &cyf, NULL, NULL, GetFont());
- if (w1 < 0)
- w1 = (int)(current_width + RADIO_SIZE);
- if (h1 < 0)
+ static int s_checkSize = 0;
+
+ if ( !s_checkSize )
+ {
+ wxScreenDC dc;
+ dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
+
+ s_checkSize = dc.GetCharHeight();
+ }
+
+ wxString str = wxGetWindowText(GetHWND());
+
+ int wCheckbox, hCheckbox;
+ if ( !str.empty() )
{
- h1 = (int)(cyf);
- if (h1 < RADIO_SIZE)
- h1 = RADIO_SIZE;
+ wxClientDC dc(const_cast<wxCheckBox *>(this));
+ dc.SetFont(GetFont());
+ dc.GetMultiLineTextExtent(GetLabelText(str), &wCheckbox, &hCheckbox);
+ wCheckbox += s_checkSize + GetCharWidth();
+
+ if ( ::GetWindowLong(GetHwnd(), GWL_STYLE) & BS_MULTILINE )
+ {
+ // We need to make the checkbox even wider in this case because
+ // otherwise it wraps lines automatically and not only on "\n"s as
+ // we need and this makes the size computed here wrong resulting in
+ // checkbox contents being truncated when it's actually displayed.
+ // Without this hack simple checkbox with "Some thing\n and more"
+ // label appears on 3 lines, not 2, under Windows 2003 using
+ // classic look and feel (although it works fine under Windows 7,
+ // with or without themes).
+ wCheckbox += s_checkSize;
+ }
+
+ if ( hCheckbox < s_checkSize )
+ hCheckbox = s_checkSize;
}
- }
- else
- {
- if (w1 < 0)
- w1 = RADIO_SIZE;
- if (h1 < 0)
- h1 = RADIO_SIZE;
- }
-
- MoveWindow(button, x1, y1, w1, h1, TRUE);
+ else
+ {
+ wCheckbox = s_checkSize;
+ hCheckbox = s_checkSize;
+ }
+#ifdef __WXWINCE__
+ hCheckbox += 1;
+#endif
+
+ wxSize best(wCheckbox, hCheckbox);
+ CacheBestSize(best);
+ return best;
}
-void wxCheckBox::SetValue(bool val)
+// ----------------------------------------------------------------------------
+// wxCheckBox operations
+// ----------------------------------------------------------------------------
+
+void wxCheckBox::SetLabel(const wxString& label)
{
- SendMessage((HWND) GetHWND(), BM_SETCHECK, val, 0);
+ wxMSWButton::UpdateMultilineStyle(GetHwnd(), label);
+
+ wxCheckBoxBase::SetLabel(label);
}
-bool wxCheckBox::GetValue(void) const
+void wxCheckBox::SetValue(bool val)
{
-#ifdef __WIN32__
- return (SendMessage((HWND) GetHWND(), BM_GETCHECK, 0, 0) == BST_CHECKED);
-#else
- return ((0x003 & SendMessage((HWND) GetHWND(), BM_GETCHECK, 0, 0)) == 0x003);
-#endif
+ Set3StateValue(val ? wxCHK_CHECKED : wxCHK_UNCHECKED);
}
-WXHBRUSH wxCheckBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
- WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
+bool wxCheckBox::GetValue() const
{
-#if CTL3D
- if ( m_useCtl3D )
- {
- HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
-
- return (WXHBRUSH) hbrush;
- }
-#endif
+ return Get3StateValue() != wxCHK_UNCHECKED;
+}
- if (GetParent()->GetTransparentBackground())
- SetBkMode((HDC) pDC, TRANSPARENT);
- else
- SetBkMode((HDC) pDC, OPAQUE);
+void wxCheckBox::Command(wxCommandEvent& event)
+{
+ int state = event.GetInt();
+ wxCHECK_RET( (state == wxCHK_UNCHECKED) || (state == wxCHK_CHECKED)
+ || (state == wxCHK_UNDETERMINED),
+ wxT("event.GetInt() returned an invalid checkbox state") );
- ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
- ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
+ Set3StateValue((wxCheckBoxState) state);
+ ProcessCommand(event);
+}
- wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
+wxCOMPILE_TIME_ASSERT(wxCHK_UNCHECKED == BST_UNCHECKED
+ && wxCHK_CHECKED == BST_CHECKED
+ && wxCHK_UNDETERMINED == BST_INDETERMINATE, EnumValuesIncorrect);
- // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
- // has a zero usage count.
-// backgroundBrush->RealizeResource();
- return (WXHBRUSH) backgroundBrush->GetResourceHandle();
+void wxCheckBox::DoSet3StateValue(wxCheckBoxState state)
+{
+ m_state = state;
+ if ( !IsOwnerDrawn() )
+ ::SendMessage(GetHwnd(), BM_SETCHECK, (WPARAM) state, 0);
+ else // owner drawn buttons don't react to this message
+ Refresh();
}
-void wxCheckBox::Command (wxCommandEvent & event)
+wxCheckBoxState wxCheckBox::DoGet3StateValue() const
{
- SetValue ((event.GetInt() != 0));
- ProcessCommand (event);
+ return m_state;
}
-bool wxBitmapCheckBox::Create(wxWindow *parent, wxWindowID id, const wxBitmap *label,
- const wxPoint& pos,
- const wxSize& size, long style,
- const wxValidator& validator,
- const wxString& name)
+bool wxCheckBox::MSWCommand(WXUINT cmd, WXWORD WXUNUSED(id))
{
- SetName(name);
- SetValidator(validator);
- if (parent) parent->AddChild(this);
-
- SetBackgroundColour(parent->GetBackgroundColour()) ;
- SetForegroundColour(parent->GetForegroundColour()) ;
- m_windowStyle = style;
-
- if ( id == -1 )
- m_windowId = NewControlId();
- else
- m_windowId = id;
-
- int x = pos.x;
- int y = pos.y;
- int width = size.x;
- int height = size.y;
-
- checkWidth = -1 ;
- checkHeight = -1 ;
- long msStyle = CHECK_FLAGS;
-
- HWND wx_button = CreateWindowEx(MakeExtendedStyle(m_windowStyle), CHECK_CLASS, "toggle",
- msStyle,
- 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
- wxGetInstance(), NULL);
-
-#if CTL3D
- if (!(GetParent()->GetWindowStyleFlag() & wxUSER_COLOURS))
- {
- Ctl3dSubclassCtl(wx_button);
- m_useCtl3D = TRUE;
- }
-#endif
+ if ( cmd != BN_CLICKED && cmd != BN_DBLCLK )
+ return false;
+
+ // first update the value so that user event handler gets the new checkbox
+ // value
+
+ // ownerdrawn buttons don't manage their state themselves unlike usual
+ // auto checkboxes so do it ourselves in any case
+ wxCheckBoxState state;
+ if ( Is3rdStateAllowedForUser() )
+ {
+ state = (wxCheckBoxState)((m_state + 1) % 3);
+ }
+ else // 2 state checkbox (at least from users point of view)
+ {
+ // note that wxCHK_UNDETERMINED also becomes unchecked when clicked
+ state = m_state == wxCHK_UNCHECKED ? wxCHK_CHECKED : wxCHK_UNCHECKED;
+ }
+
+ DoSet3StateValue(state);
+
+
+ // generate the event
+ wxCommandEvent event(wxEVT_CHECKBOX, m_windowId);
+
+ event.SetInt(state);
+ event.SetEventObject(this);
+ ProcessCommand(event);
- m_hWnd = (WXHWND)wx_button;
+ return true;
+}
- // Subclass again for purposes of dialog editing mode
- SubclassWin((WXHWND)wx_button);
+// ----------------------------------------------------------------------------
+// owner drawn checkboxes stuff
+// ----------------------------------------------------------------------------
-// SetFont(parent->GetFont());
+bool wxCheckBox::SetForegroundColour(const wxColour& colour)
+{
+ if ( !wxCheckBoxBase::SetForegroundColour(colour) )
+ return false;
- SetSize(x, y, width, height);
+ // the only way to change the checkbox foreground colour under Windows XP
+ // is to owner draw it
+ if ( wxUxThemeEngine::GetIfActive() )
+ MSWMakeOwnerDrawn(colour.IsOk());
- ShowWindow(wx_button, SW_SHOW);
- return TRUE;
+ return true;
}
-void wxBitmapCheckBox::SetLabel(const wxBitmap *bitmap)
+bool wxCheckBox::IsOwnerDrawn() const
{
+ return
+ (::GetWindowLong(GetHwnd(), GWL_STYLE) & BS_OWNERDRAW) == BS_OWNERDRAW;
}
-void wxBitmapCheckBox::SetSize(int x, int y, int width, int height, int sizeFlags)
+void wxCheckBox::MSWMakeOwnerDrawn(bool ownerDrawn)
{
- 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);
-
- HWND button = (HWND) GetHWND();
-/*
- if (w1<0)
- w1 = checkWidth + FB_MARGIN ;
- if (h1<0)
- h1 = checkHeight + FB_MARGIN ;
-*/
- MoveWindow(button, x1, y1, w1, h1, TRUE);
+ long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
+
+ // note that BS_CHECKBOX & BS_OWNERDRAW != 0 so we can't operate on
+ // them as on independent style bits
+ if ( ownerDrawn )
+ {
+ style &= ~(BS_CHECKBOX | BS_3STATE);
+ style |= BS_OWNERDRAW;
+
+ Connect(wxEVT_ENTER_WINDOW,
+ wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
+ Connect(wxEVT_LEAVE_WINDOW,
+ wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
+ Connect(wxEVT_LEFT_DOWN, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
+ Connect(wxEVT_LEFT_UP, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
+ Connect(wxEVT_SET_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
+ Connect(wxEVT_KILL_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
+ }
+ else // reset to default colour
+ {
+ style &= ~BS_OWNERDRAW;
+ style |= HasFlag(wxCHK_3STATE) ? BS_3STATE : BS_CHECKBOX;
+
+ Disconnect(wxEVT_ENTER_WINDOW,
+ wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
+ Disconnect(wxEVT_LEAVE_WINDOW,
+ wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
+ Disconnect(wxEVT_LEFT_DOWN, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
+ Disconnect(wxEVT_LEFT_UP, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
+ Disconnect(wxEVT_SET_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
+ Disconnect(wxEVT_KILL_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
+ }
+
+ ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
+
+ if ( !ownerDrawn )
+ {
+ // ensure that controls state is consistent with internal state
+ DoSet3StateValue(m_state);
+ }
}
-void wxBitmapCheckBox::SetValue(bool val)
+void wxCheckBox::OnMouseEnterOrLeave(wxMouseEvent& event)
{
- SendMessage((HWND) GetHWND(), BM_SETCHECK, val, 0);
+ m_isHot = event.GetEventType() == wxEVT_ENTER_WINDOW;
+ if ( !m_isHot )
+ m_isPressed = false;
+
+ Refresh();
+
+ event.Skip();
}
-bool wxBitmapCheckBox::GetValue(void) const
+void wxCheckBox::OnMouseLeft(wxMouseEvent& event)
{
- return ((0x003 & SendMessage((HWND) GetHWND(), BM_GETCHECK, 0, 0)) == 0x003);
+ // TODO: we should capture the mouse here to be notified about left up
+ // event but this interferes with BN_CLICKED generation so if we
+ // want to do this we'd need to generate them ourselves
+ m_isPressed = event.GetEventType() == wxEVT_LEFT_DOWN;
+ Refresh();
+
+ event.Skip();
}
+void wxCheckBox::OnFocus(wxFocusEvent& event)
+{
+ Refresh();
+
+ event.Skip();
+}
+
+bool wxCheckBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
+{
+ DRAWITEMSTRUCT *dis = (DRAWITEMSTRUCT *)item;
+
+ if ( !IsOwnerDrawn() || dis->CtlType != ODT_BUTTON )
+ return wxCheckBoxBase::MSWOnDraw(item);
+
+ // calculate the rectangles for the check mark itself and the label
+ HDC hdc = dis->hDC;
+ RECT& rect = dis->rcItem;
+ RECT rectCheck,
+ rectLabel;
+ rectLabel.top = rect.top + (rect.bottom - rect.top - GetBestSize().y) / 2;
+ rectLabel.bottom = rectLabel.top + GetBestSize().y;
+ const int MARGIN = 3;
+ const int CXMENUCHECK = ::GetSystemMetrics(SM_CXMENUCHECK);
+ // the space between the checkbox and the label is included in the
+ // check-mark bitmap
+ const int checkSize = wxMin(CXMENUCHECK - MARGIN, GetSize().y);
+ rectCheck.top = rect.top + (rect.bottom - rect.top - checkSize) / 2;
+ rectCheck.bottom = rectCheck.top + checkSize;
+
+ const bool isRightAligned = HasFlag(wxALIGN_RIGHT);
+ if ( isRightAligned )
+ {
+ rectLabel.right = rect.right - CXMENUCHECK;
+ rectLabel.left = rect.left;
+
+ rectCheck.left = rectLabel.right + ( CXMENUCHECK + MARGIN - checkSize ) / 2;
+ rectCheck.right = rectCheck.left + checkSize;
+ }
+ else // normal, left-aligned checkbox
+ {
+ rectCheck.left = rect.left + ( CXMENUCHECK - MARGIN - checkSize ) / 2;
+ rectCheck.right = rectCheck.left + checkSize;
+
+ rectLabel.left = rect.left + CXMENUCHECK;
+ rectLabel.right = rect.right;
+ }
+
+ // shall we draw a focus rect?
+ const bool isFocused = m_isPressed || FindFocus() == this;
+
+
+ // draw the checkbox itself
+ wxDCTemp dc(hdc);
+
+ int flags = 0;
+ if ( !IsEnabled() )
+ flags |= wxCONTROL_DISABLED;
+ switch ( Get3StateValue() )
+ {
+ case wxCHK_CHECKED:
+ flags |= wxCONTROL_CHECKED;
+ break;
+
+ case wxCHK_UNDETERMINED:
+ flags |= wxCONTROL_PRESSED;
+ break;
+
+ default:
+ wxFAIL_MSG( wxT("unexpected Get3StateValue() return value") );
+ // fall through
+
+ case wxCHK_UNCHECKED:
+ // no extra styles needed
+ break;
+ }
+
+ if ( wxFindWindowAtPoint(wxGetMousePosition()) == this )
+ flags |= wxCONTROL_CURRENT;
+
+ wxRendererNative::Get().
+ DrawCheckBox(this, dc, wxRectFromRECT(rectCheck), flags);
+
+ // draw the text
+ const wxString& label = GetLabel();
+
+ // first we need to measure it
+ UINT fmt = DT_NOCLIP;
+
+ // drawing underlying doesn't look well with focus rect (and the native
+ // control doesn't do it)
+ if ( isFocused )
+ fmt |= DT_HIDEPREFIX;
+ if ( isRightAligned )
+ fmt |= DT_RIGHT;
+ // TODO: also use DT_HIDEPREFIX if the system is configured so
+
+ // we need to get the label real size first if we have to draw a focus rect
+ // around it
+ if ( isFocused )
+ {
+ RECT oldLabelRect = rectLabel; // needed if right aligned
+
+ if ( !::DrawText(hdc, label.t_str(), label.length(), &rectLabel,
+ fmt | DT_CALCRECT) )
+ {
+ wxLogLastError(wxT("DrawText(DT_CALCRECT)"));
+ }
+
+ if ( isRightAligned )
+ {
+ // move the label rect to the right
+ const int labelWidth = rectLabel.right - rectLabel.left;
+ rectLabel.right = oldLabelRect.right;
+ rectLabel.left = rectLabel.right - labelWidth;
+ }
+ }
+
+ if ( !IsEnabled() )
+ {
+ ::SetTextColor(hdc, ::GetSysColor(COLOR_GRAYTEXT));
+ }
+
+ if ( !::DrawText(hdc, label.t_str(), label.length(), &rectLabel, fmt) )
+ {
+ wxLogLastError(wxT("DrawText()"));
+ }
+
+ // finally draw the focus
+ if ( isFocused )
+ {
+ rectLabel.left--;
+ rectLabel.right++;
+ if ( !::DrawFocusRect(hdc, &rectLabel) )
+ {
+ wxLogLastError(wxT("DrawFocusRect()"));
+ }
+ }
+
+ return true;
+}
+#endif // wxUSE_CHECKBOX
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