LVM_APPROXIMATEVIEWRECT (Compact 2013)

  • Article

3/28/2014

This message calculates the approximate width and height required to display a specified number of items.

Syntax

LVM_APPROXIMATEVIEWRECT wParam = (WPARAM)(INT) iCount;
    lParam = (LPARAM) MAKELPARAM(cx, cy);

Parameters

  • iCount
    Number of items to be displayed in the control. If this parameter is set to -1, the message uses the total number of items in the control.
  • cxand cy
    Specify the proposed dimensions of the control, in pixels. Either parameter can beset to -1 to allow the message to use the current width or height value.

Return Value

Returns a DWORD value that holds the approximate width and height needed to display the items, in pixels.

Remarks

Setting the size of the list-view control based on the dimensions provided by this message can optimize redraw and reduce flicker.

Requirements

Header

commctrl.h

See Also

Reference

List-View Controls Messages
ListView_ApproximateViewRect