hwndHelpInstance (HWND) - input

Handle of an instance of the Help Manager.

This is the handle returned by the WinCreateHelpInstance call.

NULLHANDLE

Disassociates an instance of the Help Manager from a window chain when the instance has been destroyed.
Other
The handle of an instance of the Help Manager to be associated with the application window chain.

hwndApp (HWND) - input

Handle of an application window.

The handle of the application window with which the instance of the Help Manager will be associated. The instance of the Help Manager is associated with the application window and any of its children or owned windows.

rc (BOOL) - returns

Success indicator.

TRUE

Successful completion
FALSE
Error occurred.

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