------------------------------------------------------------
revno: 2345
committer: poy <p...@123gen.com>
branch nick: trunk
timestamp: Mon 2010-12-13 00:10:36 +0100
message:
plug GDI mem leaks (missing DeleteDC calls)
removed:
dwt/include/dwt.hpp
dwt/include/dwt/dwt.hpp
renamed:
dwt/include/dwt/widgets/CoolBar.h => dwt/include/dwt/widgets/Rebar.h
dwt/src/widgets/CoolBar.cpp => dwt/src/widgets/Rebar.cpp
modified:
dwt/include/dwt/CanvasClasses.h
dwt/include/dwt/aspects/AspectEraseBackground.h
dwt/include/dwt/resources/Bitmap.h
dwt/src/Bitmap.cpp
dwt/src/CanvasClasses.cpp
dwt/src/Taskbar.cpp
dwt/src/widgets/Menu.cpp
dwt/src/widgets/Table.cpp
dwt/include/dwt/widgets/Rebar.h
dwt/src/widgets/Rebar.cpp
--
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=== removed file 'dwt/include/dwt.hpp'
--- dwt/include/dwt.hpp 2010-02-11 21:44:13 +0000
+++ dwt/include/dwt.hpp 1970-01-01 00:00:00 +0000
@@ -1,36 +0,0 @@
-/*
- DC++ Widget Toolkit
-
- Copyright (c) 2007-2010, Jacek Sieka
-
- SmartWin++
-
- Copyright (c) 2005 Thomas Hansen
-
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without modification,
- are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the documentation
- and/or other materials provided with the distribution.
- * Neither the name of the DWT nor SmartWin++ nor the names of its contributors
- may be used to endorse or promote products derived from this software
- without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#include "dwt/dwt.hpp"
=== modified file 'dwt/include/dwt/CanvasClasses.h'
--- dwt/include/dwt/CanvasClasses.h 2010-03-08 18:55:17 +0000
+++ dwt/include/dwt/CanvasClasses.h 2010-12-12 23:10:36 +0000
@@ -549,6 +549,15 @@
virtual ~FreeCanvas() { }
};
+/// Calls CreateCompatibleDC and returns a managed canvas.
+class CompatibleCanvas : public FreeCanvas
+{
+public:
+ explicit CompatibleCanvas(HDC hdc);
+
+ virtual ~CompatibleCanvas();
+};
+
#ifndef WINCE
// TODO: Create custom enums for typesafety... ?
/// Helper class for setting and resetting the ROP2 mode
=== modified file 'dwt/include/dwt/aspects/AspectEraseBackground.h'
--- dwt/include/dwt/aspects/AspectEraseBackground.h 2010-07-10 14:36:48 +0000
+++ dwt/include/dwt/aspects/AspectEraseBackground.h 2010-12-12 23:10:36 +0000
@@ -55,22 +55,18 @@
{
WidgetType& W() { return *static_cast<WidgetType*>(this); }
- struct EraseBackgroundDispatcher {
- typedef std::function<void (Canvas&)> F;
-
- EraseBackgroundDispatcher(const F& f_, WidgetType* widget_) : f(f_), widget(widget_) { }
+ struct EraseBackgroundDispatcher : Dispatchers::Base<void (Canvas&)> {
+ typedef Dispatchers::Base<void (Canvas&)> BaseType;
+ EraseBackgroundDispatcher(const F& f_) : BaseType(f_) { }
bool operator()(const MSG& msg, LRESULT& ret) const {
- FreeCanvas canvas( widget->handle(), reinterpret_cast< HDC >( msg.wParam ) );
-
+ FreeCanvas canvas(reinterpret_cast<HDC>(msg.wParam));
f(canvas);
ret = 1;
return true;
}
-
- F f;
- WidgetType* widget;
};
+
public:
/// \ingroup EventHandlersAspectEraseBackground
/// Setting the event handler for the "erase background" event
=== removed file 'dwt/include/dwt/dwt.hpp'
--- dwt/include/dwt/dwt.hpp 2010-11-13 16:49:19 +0000
+++ dwt/include/dwt/dwt.hpp 1970-01-01 00:00:00 +0000
@@ -1,83 +0,0 @@
-/*
- DC++ Widget Toolkit
-
- Copyright (c) 2007-2010, Jacek Sieka
-
- SmartWin++
-
- Copyright (c) 2005 Thomas Hansen
-
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without modification,
- are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the documentation
- and/or other materials provided with the distribution.
- * Neither the name of the DWT nor SmartWin++ nor the names of its contributors
- may be used to endorse or promote products derived from this software
- without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#ifndef DWT_SmartWin_h
-#define DWT_SmartWin_h
-
-#include "WindowsHeaders.h"
-
-#include "Application.h"
-#include "ClipBoard.h"
-#include "Cursor.h"
-#include "LibraryLoader.h"
-#include "Point.h"
-#include "Rectangle.h"
-#include "resources/Accelerator.h"
-#include "resources/Bitmap.h"
-#include "resources/Brush.h"
-#include "resources/Font.h"
-#include "resources/Icon.h"
-#include "resources/ImageList.h"
-#include "resources/Pen.h"
-#include "tstring.h"
-#include "widgets/Button.h"
-#include "widgets/CheckBox.h"
-#include "widgets/ComboBox.h"
-#include "widgets/Container.h"
-#include "widgets/CoolBar.h"
-#include "widgets/DateTime.h"
-#include "widgets/GroupBox.h"
-#include "widgets/Label.h"
-#include "widgets/Menu.h"
-#include "widgets/MDIChild.h"
-#include "widgets/MDIFrame.h"
-#include "widgets/MDIParent.h"
-#include "widgets/ModalDialog.h"
-#include "widgets/ModelessDialog.h"
-#include "widgets/ProgressBar.h"
-#include "widgets/RadioButton.h"
-#include "widgets/RichTextBox.h"
-#include "widgets/Slider.h"
-#include "widgets/Spinner.h"
-#include "widgets/StatusBar.h"
-#include "widgets/Table.h"
-#include "widgets/TabView.h"
-#include "widgets/TextBox.h"
-#include "widgets/Tree.h"
-#include "widgets/ToolBar.h"
-#include "widgets/ToolTip.h"
-#include "widgets/Window.h"
-
-#endif
=== modified file 'dwt/include/dwt/resources/Bitmap.h'
--- dwt/include/dwt/resources/Bitmap.h 2010-02-11 21:44:13 +0000
+++ dwt/include/dwt/resources/Bitmap.h 2010-12-12 23:10:36 +0000
@@ -107,7 +107,7 @@
/** This function is IMMUTABLE meaning it will not modify the given bitmap at all
* but rather return a new Bitmap containing the resized Bitmap.
*/
- BitmapPtr resize( const Point & newSize ) const;
+ BitmapPtr resize(const Point& newSize) const;
private:
friend class Handle<GdiPolicy<HBITMAP> >;
=== renamed file 'dwt/include/dwt/widgets/CoolBar.h' => 'dwt/include/dwt/widgets/Rebar.h'
--- dwt/include/dwt/widgets/CoolBar.h 2010-02-11 21:44:13 +0000
+++ dwt/include/dwt/widgets/Rebar.h 2010-12-12 23:10:36 +0000
@@ -33,59 +33,34 @@
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#ifndef DWT_CoolBar_h
-#define DWT_CoolBar_h
-
-#ifndef WINCE // Doesn't exist in Windows CE based systems
-
-#include "../aspects/AspectEnabled.h"
-#include "../aspects/AspectKeyboard.h"
-#include "../aspects/AspectFont.h"
-#include "../aspects/AspectRaw.h"
-#include "../aspects/AspectSizable.h"
-#include "../aspects/AspectVisible.h"
-#include "../util/check.h"
+#ifndef DWT_Rebar_h
+#define DWT_Rebar_h
+
+#include "Control.h"
namespace dwt {
-/// Coolbar Control class
+/// Rebar Control class
/** \ingroup WidgetControls
* \WidgetUsageInfo
- * \image html coolbar.PNG
- * A coolbar is a strip of buttons normally associated with menu commands, like for
+ * \image html Rebar.PNG
+ * A Rebar is a strip of buttons normally associated with menu commands, like for
* instance Internet Explorer has ( unless you have made them invisible ) a toolbar
* of buttons, one for going "home", one to stop rendering of the current page, one
* to view the log of URL's you have been to etc... In addition to serving like a
- * dockable toolbar ( see ToolBar ) a Coolbar Widget can also contain more
+ * dockable toolbar ( see ToolBar ) a Rebar Widget can also contain more
* complex Widgets lke for instance a ComboBox, a TextBox and so on...
- *
- * @todo This class needs some love...
*/
-class CoolBar :
- public Widget,
-
- // Aspects
- public AspectEnabled< CoolBar >,
- public AspectKeyboard< CoolBar >,
- public AspectFont< CoolBar >,
- public AspectRaw< CoolBar >,
- private AspectSizable< CoolBar >,
- public AspectVisible< CoolBar >
+class Rebar :
+ public Control
{
- typedef Widget BaseType;
- typedef dwt::AspectSizable< CoolBar > AspectSizable;
- friend class WidgetCreator< CoolBar >;
+ typedef Control BaseType;
+
+ friend class WidgetCreator<Rebar>;
+
public:
- // Including the stuff we need from AspectSizable to make it accessible
- // Note here that since we DON'T want the setBounds functions we must
- // inherit privately from AspectSizable and include the stuff we WAN'T to
- // expose from AspectSizable in a public block of the class.
- using AspectSizable::bringToFront;
- using AspectSizable::onSized;
- using AspectSizable::onMoved;
-
/// Class type
- typedef CoolBar ThisType;
+ typedef Rebar ThisType;
/// Object type
typedef ThisType* ObjectType;
@@ -101,27 +76,25 @@
Seed();
};
- /// Actually creates the Coolbar
- /** You should call WidgetFactory::createCoolbar if you instantiate class
+ /// Actually creates the Rebar
+ /** You should call WidgetFactory::createRebar if you instantiate class
* directly. <br>
* Only if you DERIVE from class you should call this function directly.
*/
- void create( const Seed & cs = Seed() );
+ void create(const Seed& cs = Seed());
- /// Refreshes the Coolbar
+#if 0
+ /// Refreshes the Rebar
/** Call this one after the container widget has been resized to make sure the
- * coolbar is having the right size...
+ * Rebar is having the right size...
*/
void refresh();
+#endif
protected:
- // CTOR
- explicit CoolBar(Widget *parent );
-
- // To assure nobody accidentally deletes any heaped object of this type, parent
- // is supposed to do so when parent is killed...
- virtual ~CoolBar()
- {}
+ // Protected to avoid direct instantiation
+ explicit Rebar(Widget* parent);
+ virtual ~Rebar() { }
private:
friend class ChainingDispatcher;
@@ -131,29 +104,6 @@
void addChild( Widget * child, unsigned width, unsigned height, const tstring & txt );
};
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// Implementation of class
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-/*
-inline CoolBar::CoolBar( Widget * parent )
- : BaseType( parent )
-{
- // Can't have a text box without a parent...
- dwtassert( parent, _T( "Can't have a Button without a parent..." ) );
-}
-*/
-inline void CoolBar::refresh() {
- // This might look a bit stupid, but Windows API have some minor flaws. One of
- // those flaws is that a Coolbar (and a Toolbar) control must be "resized" with
- // a dummy value to make sure the Coolbar (&& the Toolbar) fills up the
- // complete area of the container Widget...
-
- if ( ::MoveWindow( this->handle(), 0, 0, 0, 0, TRUE ) == 0 ) {
- dwtWin32DebugFail("Couldn't reposition windows");
- }
-}
-
-}
-
-#endif //WINCE
-#endif //CoolBar_h
+}
+
+#endif
=== modified file 'dwt/src/Bitmap.cpp'
--- dwt/src/Bitmap.cpp 2010-02-11 21:44:13 +0000
+++ dwt/src/Bitmap.cpp 2010-12-12 23:10:36 +0000
@@ -34,6 +34,8 @@
*/
#include <dwt/resources/Bitmap.h>
+
+#include <dwt/CanvasClasses.h>
#include <dwt/Point.h>
namespace dwt {
@@ -75,25 +77,18 @@
return Point( bm.bmWidth, bm.bmHeight );
}
-BitmapPtr Bitmap::resize( const Point & newSize ) const
-{
- HDC hdc1 = ::CreateCompatibleDC( 0 );
- HBITMAP hBitmapOld1 = ( HBITMAP )::SelectObject( hdc1, handle() );
+BitmapPtr Bitmap::resize(const Point& newSize) const {
+ CompatibleCanvas dc1(0);
+ Canvas::Selector select1(dc1, *this);
- HDC hdc2 = ::CreateCompatibleDC( 0 );
- HBITMAP hBitmapNew = ::CreateCompatibleBitmap( hdc1, newSize.x, newSize.y );
- HBITMAP hBitmapOld2 = ( HBITMAP )::SelectObject( hdc2, hBitmapNew );
+ CompatibleCanvas dc2(0);
+ BitmapPtr ret(new Bitmap(::CreateCompatibleBitmap(dc1.handle(), newSize.x, newSize.y)));
+ Canvas::Selector select2(dc2, *ret);
const Point oldSize = getSize();
- ::StretchBlt( hdc2, 0, 0, newSize.x, newSize.y, hdc1, 0, 0, oldSize.x, oldSize.y, SRCCOPY );
-
- hBitmapNew = ( HBITMAP )::SelectObject( hdc2, hBitmapOld2 );
-
- // Clean up
- ::SelectObject( hdc1, hBitmapOld1 );
- ::DeleteDC( hdc2 );
- ::DeleteDC( hdc1 );
- return BitmapPtr( new Bitmap( hBitmapNew ) );
+ ::StretchBlt(dc2.handle(), 0, 0, newSize.x, newSize.y, dc1.handle(), 0, 0, oldSize.x, oldSize.y, SRCCOPY);
+
+ return ret;
}
}
=== modified file 'dwt/src/CanvasClasses.cpp'
--- dwt/src/CanvasClasses.cpp 2010-03-08 18:55:17 +0000
+++ dwt/src/CanvasClasses.cpp 2010-12-12 23:10:36 +0000
@@ -280,6 +280,15 @@
itsHdc = hdc;
}
+CompatibleCanvas::CompatibleCanvas(HDC hdc) :
+FreeCanvas(::CreateCompatibleDC(hdc))
+{
+}
+
+CompatibleCanvas::~CompatibleCanvas() {
+ ::DeleteDC(itsHdc);
+}
+
#ifndef WINCE
HdcModeSetter::HdcModeSetter( Canvas & canvas, int mode )
: itsOldMode( ::GetROP2( canvas.handle() ) ),
=== modified file 'dwt/src/Taskbar.cpp'
--- dwt/src/Taskbar.cpp 2010-11-02 16:09:03 +0000
+++ dwt/src/Taskbar.cpp 2010-12-12 23:10:36 +0000
@@ -220,7 +220,7 @@
BITMAPINFO info = { { sizeof(BITMAPINFOHEADER), size_full.x, size_full.y, 1, 32, BI_RGB } };
BitmapPtr bitmap_full(new Bitmap(::CreateDIBSection(canvas.handle(), &info, DIB_RGB_COLORS, 0, 0, 0)));
- FreeCanvas canvas_full(::CreateCompatibleDC(canvas.handle()));
+ CompatibleCanvas canvas_full(canvas.handle());
Canvas::Selector select_full(canvas_full, *bitmap_full);
tab->sendMessage(WM_PRINT, reinterpret_cast<WPARAM>(canvas_full.handle()), PRF_CLIENT | PRF_NONCLIENT | PRF_CHILDREN | PRF_ERASEBKGND);
@@ -243,7 +243,7 @@
info.bmiHeader.biHeight = size_thumb.y;
BitmapPtr bitmap_thumb(new Bitmap(::CreateDIBSection(canvas.handle(), &info, DIB_RGB_COLORS, 0, 0, 0)));
- FreeCanvas canvas_thumb(::CreateCompatibleDC(canvas.handle()));
+ CompatibleCanvas canvas_thumb(canvas.handle());
Canvas::Selector select_thumb(canvas_thumb, *bitmap_thumb);
::SetStretchBltMode(canvas_thumb.handle(), HALFTONE);
=== modified file 'dwt/src/widgets/Menu.cpp'
--- dwt/src/widgets/Menu.cpp 2010-11-30 18:55:29 +0000
+++ dwt/src/widgets/Menu.cpp 2010-12-12 23:10:36 +0000
@@ -662,21 +662,19 @@
canvas.fill(iconRectangle, Brush(highlight ? colors.highlightBackground : colors.stripBar));
// create memory DC and set bitmap on it
- HDC memoryDC = ::CreateCompatibleDC( canvas.handle() );
- HGDIOBJ old = ::SelectObject( memoryDC, ::CreateCompatibleBitmap( canvas.handle(), iconSize.x, iconSize.y ) );
+ CompatibleCanvas canvas_compat(canvas.handle());
+ BitmapPtr bitmap_compat(new Bitmap(::CreateCompatibleBitmap(canvas.handle(), iconSize.x, iconSize.y)));
+ Canvas::Selector select_compat(canvas_compat, *bitmap_compat);
// draw into memory
RECT rc( Rectangle( 0, 0, iconSize.x, iconSize.y ) );
- ::DrawFrameControl( memoryDC, & rc, DFC_MENU, ( info.fType & MFT_RADIOCHECK ) == 0 ? DFCS_MENUCHECK : DFCS_MENUBULLET );
+ ::DrawFrameControl(canvas_compat.handle(), & rc, DFC_MENU, ( info.fType & MFT_RADIOCHECK ) == 0 ? DFCS_MENUCHECK : DFCS_MENUBULLET );
const int adjustment = 2; // adjustment for mark to be in the center
// bit - blast into out canvas
- ::BitBlt( canvas.handle(), iconRectangle.left() + adjustment, iconRectangle.top(), iconSize.x, iconSize.y, memoryDC, 0, 0, SRCAND );
-
- // delete memory dc
- ::DeleteObject( ::SelectObject( memoryDC, old ) );
- ::DeleteDC( memoryDC );
+ ::BitBlt(canvas.handle(), iconRectangle.left() + adjustment, iconRectangle.top(),
+ iconSize.x, iconSize.y, canvas_compat.handle(), 0, 0, SRCAND);
}
if(isChecked && !theme && popup && !wrapper->isTitle) {
=== renamed file 'dwt/src/widgets/CoolBar.cpp' => 'dwt/src/widgets/Rebar.cpp'
--- dwt/src/widgets/CoolBar.cpp 2010-02-11 21:44:13 +0000
+++ dwt/src/widgets/Rebar.cpp 2010-12-12 23:10:36 +0000
@@ -29,21 +29,41 @@
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#include <dwt/widgets/CoolBar.h>
+#include <dwt/widgets/Rebar.h>
#include <dwt/DWTException.h>
namespace dwt {
-CoolBar::Seed::Seed() :
- BaseType::Seed(WS_CHILD | WS_VISIBLE | RBS_VARHEIGHT | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | CCS_NODIVIDER)
-{
-}
-
-void CoolBar::create( const Seed & cs ) {
+const TCHAR Rebar::windowClass[] = REBARCLASSNAME;
+
+Rebar::Seed::Seed() :
+BaseType::Seed(WS_CHILD | RBS_VARHEIGHT | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | CCS_NODIVIDER)
+{
+}
+
+Rebar::Rebar(Widget* parent) :
+BaseType(parent, ChainingDispatcher::superClass<Rebar>())
+{
+}
+
+void Rebar::create(const Seed& cs) {
BaseType::create(cs);
}
-void CoolBar::addChild( Widget * child,
+#if 0
+void Rebar::refresh() {
+ // This might look a bit stupid, but Windows API have some minor flaws. One of
+ // those flaws is that a Rebar (and a Toolbar) control must be "resized" with
+ // a dummy value to make sure the Rebar (&& the Toolbar) fills up the
+ // complete area of the container Widget...
+
+ if ( ::MoveWindow( this->handle(), 0, 0, 0, 0, TRUE ) == 0 ) {
+ dwtWin32DebugFail("Couldn't reposition windows");
+ }
+}
+#endif
+
+void Rebar::addChild( Widget * child,
unsigned width, unsigned height, const tstring & txt
)
{
@@ -62,9 +82,8 @@
rbBand.fStyle = 0; //RBBS_GRIPPERALWAYS;
if ( sendMessage( RB_INSERTBAND, ( WPARAM ) - 1, ( LPARAM ) & rbBand ) == 0 )
{
- throw DWTException( "There was a problem when trying to insert a band into your Coolbar object!");
+ throw DWTException( "There was a problem when trying to insert a band into your Rebar object!");
}
}
-
}
=== modified file 'dwt/src/widgets/Table.cpp'
--- dwt/src/widgets/Table.cpp 2010-12-08 23:15:35 +0000
+++ dwt/src/widgets/Table.cpp 2010-12-12 23:10:36 +0000
@@ -535,7 +535,7 @@
triangle.push_back(Point(10, 6));
UpdateCanvas dc(this);
- FreeCanvas dc_compat(::CreateCompatibleDC(dc.handle()));
+ CompatibleCanvas dc_compat(dc.handle());
upArrow = BitmapPtr(new Bitmap(::CreateCompatibleBitmap(dc.handle(), size.x, size.y)));
downArrow = BitmapPtr(new Bitmap(::CreateCompatibleBitmap(dc.handle(), size.x, size.y)));
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