Important:
This is retired content. This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This content may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.
A version of this page is also available for
4/8/2010

This function retrieves the handle to a window that has the specified relationship to the specified window. A remote application interface (RAPI) version of this function exists, named CeGetWindow (RAPI).

Syntax 

HWND GetWindow( 
  HWND 
hWnd, 
  UINT 
uCmd 
);

Parameters

hWnd

[in] Handle to a window. The window handle retrieved is relative to this window, based on the value of the uCmdparameter.

uCmd

[in] Specifies the relationship between the specified window and the window whose handle is to be retrieved. This parameter can be one of the following values.

Value Description

GW_CHILD

The retrieved handle identifies the child window at the top of the z-order, if the specified window is a parent window; otherwise, the retrieved handle is NULL. The function examines only child windows of the specified window. It does not examine descendant windows.

GW_HWNDFIRST

The retrieved handle identifies the window of the same type that is highest in the z-order. If the specified window is a topmost window, the handle identifies the topmost window that is highest in the z-order. If the specified window is a child window, the handle identifies the sibling window that is highest in the z-order.

GW_HWNDLAST

The retrieved handle identifies the window of the same type that is lowest in the z-order. If the specified window is a topmost window, the handle identifies the topmost window that is lowest in the z-order. If the specified window is a child window, the handle identifies the sibling window that is lowest in the z-order.

GW_HWNDNEXT

The retrieved handle identifies the window below the specified window in the z-order. If the specified window is a topmost window, the handle identifies the topmost window below the specified window. If the specified window is a child window, the handle identifies the sibling window below the specified window.

GW_HWNDPREV

The retrieved handle identifies the window above the specified window in the z-order. If the specified window is a topmost window, the handle identifies the topmost window above the specified window. If the specified window is a child window, the handle identifies the sibling window above the specified window.

GW_OWNER

The retrieved handle identifies the specified window's owner window, if any. This flag will not retrieve a parent window.

Return Value

A window handle indicates success. NULL indicates that no window exists with the specified relationship to the specified window. To get extended error information, call GetLastError.

Remarks

This function distinguishes between only top-level and child windows. Top-most windows are considered top-level windows.

In Windows CE 1.0, the GW_OWNER flag value for the uCmdparameter is only supported for dialog boxes.

When working with RAPI for Windows CE 1.0 and 1.01, use the PegGetWindowfunction.

Requirements

Header winuser.h
Windows Embedded CE Windows CE 1.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also