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TileWindows function

Applies to: desktop apps only

Tiles the specified child windows of the specified parent window.

Syntax

Copy

WORD WINAPI TileWindows(
  __in_opt  HWND hwndParent,
  __in      UINT wHow,
  __in_opt  const RECT *lpRect,
  __in      UINT cKids,
  __in_opt  const HWND *lpKids
);

Parameters

hwndParent [in, optional]

Type: HWND

A handle to the parent window. If this parameter is NULL, the desktop window is assumed.

wHow [in]

Type: UINT

The tiling flags. This parameter can be one of the following values—optionally combined with MDITILE_SKIPDISABLED to prevent disabled MDI child windows from being tiled.

Value	Meaning
MDITILE_HORIZONTAL 0x0001	Tiles windows horizontally.
MDITILE_VERTICAL 0x0000	Tiles windows vertically.

lpRect [in, optional]

Type: const RECT*

A pointer to a structure that specifies the rectangular area, in client coordinates, within which the windows are arranged. If this parameter is NULL, the client area of the parent window is used.

cKids [in]

Type: UINT

The number of elements in the array specified by the lpKids parameter. This parameter is ignored if lpKids is NULL.

lpKids [in, optional]

Type: const HWND*

An array of handles to the child windows to arrange. If a specified child window is a top-level window with the style WS_EX_TOPMOST or WS_EX_TOOLWINDOW, the child window is not arranged. If this parameter is NULL, all child windows of the specified parent window (or of the desktop window) are arranged.

Return value

Type:

Type: WORD

If the function succeeds, the return value is the number of windows arranged.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

Calling TileWindows causes all maximized windows to be restored to their previous size.

Requirements