Vcl.Dialogs.TCustomTaskDialog.CallbackProc
Delphi
function CallbackProc(hwnd: HWND; msg: UINT; wParam: WPARAM; lParam: LPARAM; lpRefData: LONG_PTR): HResult; dynamic;
C++
DYNAMIC HRESULT __fastcall CallbackProc(HWND hwnd, unsigned msg, NativeUInt wParam, NativeInt lParam, NativeInt lpRefData);
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | protected | Vcl.Dialogs.pas Vcl.Dialogs.hpp |
Vcl.Dialogs | TCustomTaskDialog |
Description
An application-defined function used with Task Dialogs.
Use CallbackProc as an application-defined function used with the TaskDialogIndirect function. It receives messages from the Task Dialog when various events occur. An application must register this callback function. .