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added AutoHFONT; allow initialize SelectInHDC later (and not necessarily in ctor)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44046 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2006-12-23 22:11:16 +00:00
parent e3eac0ff7f
commit 6969c2c318
1 changed files with 45 additions and 9 deletions
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54
include/wx/msw/private.h
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@@ -406,29 +406,49 @@ private:
// dtor // dtor
class SelectInHDC class SelectInHDC
{ {
private:
void DoInit(HGDIOBJ hgdiobj) { m_hgdiobj = ::SelectObject(m_hdc, hgdiobj); }
public: public:
SelectInHDC(HDC hdc, HGDIOBJ hgdiobj) : m_hdc(hdc) SelectInHDC() : m_hdc(NULL) { }
{ m_hgdiobj = ::SelectObject(hdc, hgdiobj); } SelectInHDC(HDC hdc, HGDIOBJ hgdiobj) : m_hdc(hdc) { DoInit(hgdiobj); }
~SelectInHDC() { ::SelectObject(m_hdc, m_hgdiobj); } void Init(HDC hdc, HGDIOBJ hgdiobj)
{
wxASSERT_MSG( !m_hdc, _T("initializing twice?") );
// return true if the object was successfully selected m_hdc = hdc;
operator bool() const { return m_hgdiobj != 0; }
DoInit(hgdiobj);
}
~SelectInHDC() { if ( m_hdc ) ::SelectObject(m_hdc, m_hgdiobj); }
// return true if the object was successfully selected
operator bool() const { return m_hgdiobj != 0; }
private: private:
HDC m_hdc; HDC m_hdc;
HGDIOBJ m_hgdiobj; HGDIOBJ m_hgdiobj;
DECLARE_NO_COPY_CLASS(SelectInHDC) DECLARE_NO_COPY_CLASS(SelectInHDC)
}; };
// a class which cleans up any GDI object // a class which cleans up any GDI object
class AutoGDIObject class AutoGDIObject
{ {
protected: protected:
AutoGDIObject() { m_gdiobj = NULL; }
AutoGDIObject(HGDIOBJ gdiobj) : m_gdiobj(gdiobj) { } AutoGDIObject(HGDIOBJ gdiobj) : m_gdiobj(gdiobj) { }
~AutoGDIObject() { if ( m_gdiobj ) ::DeleteObject(m_gdiobj); } ~AutoGDIObject() { if ( m_gdiobj ) ::DeleteObject(m_gdiobj); }
void InitGdiobj(HGDIOBJ gdiobj)
{
wxASSERT_MSG( !m_gdiobj, _T("initializing twice?") );
m_gdiobj = gdiobj;
}
HGDIOBJ GetObject() const { return m_gdiobj; } HGDIOBJ GetObject() const { return m_gdiobj; }
private: private:
@@ -437,7 +457,7 @@ private:
// TODO: all this asks for using a AutoHandler<T, CreateFunc> template... // TODO: all this asks for using a AutoHandler<T, CreateFunc> template...
// a class for temporary pens // a class for temporary brushes
class AutoHBRUSH : private AutoGDIObject class AutoHBRUSH : private AutoGDIObject
{ {
public: public:
@@ -447,6 +467,22 @@ public:
operator HBRUSH() const { return (HBRUSH)GetObject(); } operator HBRUSH() const { return (HBRUSH)GetObject(); }
}; };
// a class for temporary fonts
class AutoHFONT : private AutoGDIObject
{
private:
public:
AutoHFONT()
: AutoGDIObject() { }
AutoHFONT(const LOGFONT& lf)
: AutoGDIObject(::CreateFontIndirect(&lf)) { }
void Init(const LOGFONT& lf) { InitGdiobj(::CreateFontIndirect(&lf)); }
operator HFONT() const { return (HFONT)GetObject(); }
};
// a class for temporary pens // a class for temporary pens
class AutoHPEN : private AutoGDIObject class AutoHPEN : private AutoGDIObject
{ {