LVM_APPROXIMATEVIEWRECT

  • 项目

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

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.
  • cx and 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 Values

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

OS Versions: Windows CE 2.0 and later.
Header: Commctrl.h.

See Also

ListView_ApproximateViewRect | List-View Controls Messages

Last updated on Wednesday, April 13, 2005

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