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RAD Studio VCL Reference
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TCustomTaskDialog.CallbackProc Method
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RAD Studio VCL Reference
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An application-defined function used with Task Dialogs.
function CallbackProc(hwnd: HWND; msg: UINT; wParam: WPARAM; lParam: LPARAM; lpRefData: LONG_PTR): HResult; dynamic;
__fastcall HRESULT CallbackProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, LONG_PTR lpRefData);
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. .
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Description