Vcl.Controls.TControl.Perform

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Delphi

function Perform(Msg: Cardinal; WParam: WPARAM; LParam: LPARAM): LRESULT; overload;
function Perform(Msg: Cardinal; WParam: WPARAM; LParam: PChar): LRESULT; overload;
function Perform(Msg: Cardinal; WParam: WPARAM; var LParam: TRect): LRESULT; overload;

C++

NativeInt __fastcall Perform(unsigned Msg, NativeUInt WParam, NativeInt LParam)/* overload */;
NativeInt __fastcall Perform(unsigned Msg, NativeUInt WParam, System::WideChar * LParam)/* overload */;
NativeInt __fastcall Perform(unsigned Msg, NativeUInt WParam, System::Types::TRect &LParam)/* overload */;

Properties

Type	Visibility	Source	Unit	Parent
function	public	Vcl.Controls.pas Vcl.Controls.hpp	Vcl.Controls	TControl

Description

Responds as if the control received a specified Windows message.

Call Perform to bypass the Windows message queue and send a message directly to the control's window procedure.

Perform fills a message record (of type TMessage) with the message ID passed in the Msg parameter, the message parameters passed in WParam and LParam, and a result field of zero. Perform then passes the message record to the WindowProc method for processing.

See Also

• WindowProc

• TMessage

Code Examples

• TControlPerform (Delphi)
• TControlPerform (C++)