Occurs when the user has clicked the Help button, clicked the "?" button on the title bar, or pressed F1 for a control on a dialog.
helpType
Help callback type. For possible values refer to ScreenCaptureHelpType.
controlId
Control Id type. If the user presses F1 for a control, or clicks the "?" button on the title bar, its ID will be sent to this method, otherwise the value of controlId is -1. For possible values refer to ScreenCaptureControlId.
For an example, refer to ScreenCaptureEngine.