Parameters

hWnd

The handle to the dialog box window.

msg

The message received by the dialog box.

wparam

Additional information about the message.

lparam

Additional information about the message.

Returns

Returns zero if the default dialog box procedure processes the message; returns a nonzero value if the default dialog box procedure ignores the message.

Remarks

A hook procedure allows the user to connect or insert other routines into a routine or application for the purpose of debugging or enhancing functionality.

By default, the hook procedure centers the dialog box on the screen in response to a WM_INITDIALOG message.

Requirements