TGDIBackend

Ancestors

Description

This back-end allocates the memory and resources required for the surface directly via the Windows GDI subsystem.

Features

• Access to the surface via GDI routines (via IDeviceContextSupport and IBitmapContextSupport);
• Access to the surface via the default VCL canvas (via ICanvasSupport);
• Support for text drawing and measuring and related font methods (via ITextSupport and IFontSupport);
• Supports all of the other interfaces required for TBitmap32, making it the default back-end for this class.

Reference

Methods	Properties	Events
In TBackend:
Assign	Bits	OnChanging
ChangeSize
Changing
Clear
Create
Destroy
Empty
FinalizeSurface
InitializeSurface
In TThreadPersistent:
Lock	LockCount
Unlock
In TNotifiablePersistent:
BeginUpdate	UpdateCount	OnChange
Changed
EndUpdate

See Also

TBitmap32, GR32_Backends, IBitmapContextSupport, ICanvasSupport, IDeviceContextSupport, IFontSupport, ITextSupport

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