Controls.TWinControl.GetDeviceContext
From RAD Studio VCL Reference
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Delphi Information
From Controls.pas
function GetDeviceContext(var WindowHandle: HWND): HDC; overload; override;
Unit: Controls
Type: method
Visibility: protected
Member Of: TWinControl
Description
Provides access to a device context for the control.
Call GetDeviceContext to obtain a handle to a device context for the control.
GetDeviceContext calls the Windows API function GetDC, passing the windowed control's Handle property. It returns the window's handle in the WindowHandle parameter and the HDC as the return value. If the call is unsuccessful, the EOutOfResources exception is raised.
See Also
Code Samples