Vcl.Graphics.TCanvas.HandleAllocated

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Delphi

function HandleAllocated: Boolean;

C++

bool __fastcall HandleAllocated();

Properties

Type	Visibility	Source	Unit	Parent
function	public	Vcl.Graphics.pas Vcl.Graphics.hpp	Vcl.Graphics	TCanvas

Description

Indicates whether the TCanvas object has acquired a handle to a device context.

Use HandleAllocated to determine whether the Handle property is set to an HDC value. HandleAllocated indicates whether the canvas has acquired a device context. Use HandleAllocated rather than reading the Handle property. When an application reads the Handle property, TCanvas automatically allocates a new device context and returns its handle if the property had not been previously set.

See Also

• Handle