HandleScroll Method

Description:

Handles scrollbar messages from an hWnd window. It should not be used to set the absolute scroll position; function ScrollTo Method should be used instead.

Syntax:

      HandleScroll(hWnd As Long, Type As enumIGDsplScrollType,
lScrollCmd As Long, lScrollValue As Long)

Parameters:

Name	Description
hWnd	Handle of window where image is displayed and where scrolling is performed
Type	Scroll command. Its value is platform dependent. For Win32 platforms there should be LOWORD(wParam)Valid values are: IG_DSPL_SCROLL_HORIZONTAL IG_DSPL_SCROLL_VERTICAL
lScrollCmd	Scroll command. Its value is platform dependent. For Win32 platforms there should be LOWORD(wParam). Valid values are: IG_DSPL_HSCROLLBAR IG_DSPL_HSCROLLBAR_AUTO IG_DSPL_HSCROLLBAR_ENABLE IG_DSPL_HSCROLLBAR_DISABLE IG_DSPL_VSCROLLBAR IG_DSPL_VSCROLLBAR_AUTO IG_DSPL_VSCROLLBAR_ENABLE IG_DSPL_VSCROLLBAR_DISABLE
lScrollValue	Scroll value. It is also platform dependent and its value may have a different meaning from nScrlType. Under the Windows platform, it is not used because the scroll position is obtained directly from the scrollbars.

Return Value:

N/A

Bits Per Pixel:

N/A

Sample:

Display