CGdiObject Class

项目
04/28/2015

Provides a base class for various kinds of Windows graphics device interface (GDI) objects such as bitmaps, regions, brushes, pens, palettes, and fonts.

class CGdiObject : public CObject

Members

Public Constructors

Name	Description
CGdiObject::CGdiObject	Constructs a CGdiObject object.

Public Methods

Name	Description
CGdiObject::Attach	Attaches a Windows GDI object to a CGdiObject object.
CGdiObject::CreateStockObject	Retrieves a handle to one of the Windows predefined stock pens, brushes, or fonts.
CGdiObject::DeleteObject	Deletes the Windows GDI object attached to the CGdiObject object from memory by freeing all system storage associated with the object.
CGdiObject::DeleteTempMap	Deletes any temporary CGdiObject objects created by FromHandle.
CGdiObject::Detach	Detaches a Windows GDI object from a CGdiObject object and returns a handle to the Windows GDI object.
CGdiObject::FromHandle	Returns a pointer to a CGdiObject object given a handle to a Windows GDI object.
CGdiObject::GetObject	Fills a buffer with data that describes the Windows GDI object attached to the CGdiObject object.
CGdiObject::GetObjectType	Retrieves the type of the GDI object.
CGdiObject::GetSafeHandle	Returns m_hObject unless this is NULL, in which case NULL is returned.
CGdiObject::UnrealizeObject	Resets the origin of a brush or resets a logical palette.

Public Operators

Name	Description
CGdiObject::operator !=	Determines if two GDI objects are logically not equal.
CGdiObject::operator ==	Determines if two GDI objects are logically equal.
CGdiObject::operator HGDIOBJ	Retrieves a HANDLE to the attached Windows GDI object.

Public Data Members

Name	Description
CGdiObject::m_hObject	A HANDLE containing the HBITMAP, HPALETTE, HRGN, HBRUSH, HPEN, or HFONT attached to this object.

Remarks

You never create a CGdiObject directly. Rather, you create an object from one of its derived classes, such as CPen or CBrush.

For more information on CGdiObject, see Graphic Objects.

Inheritance Hierarchy

CObject

CGdiObject

Requirements

Header: afxwin.h

通过