| 术语 | iswindowvisible |
| 释义 | IsWindowVisible 语法： BOOL IsWindowVisible( HWND hWnd ); IsWindowVisible函数 该IsWindowVisible函数检索指定的窗口可见的状态。 参数 hWnd [in]的窗口句柄测试。 返回值 如果指定的窗口，它的父窗口，其母公司的父窗口，等等，有WS_VISIBLE风格，则返回值为非零。否则，返回值是零。 因为返回值指定窗口是否具有WS_VISIBLE风格，它可能为零，即使窗口是完全由其他窗口遮挡。 备注 窗口的能见度状态所指出的WS_VISIBLE样式位。当WS_VISIBLE设置，窗口显示和随后的绘图显示到它只要窗口具有WS_VISIBLE风格。 任何与WS_VISIBLE风格的窗口绘图将不会显示，如果窗口被遮住其他窗口，或是由它的父窗口剪辑。 功能信息 最低DLL版本 user32.dll 在Winuser.h中HeaderDeclared，头文件：winuser.h import libraryUser32.lib 最低操作系统Windows 95，Windows NT 3.1 UnicodeImplemented为Unicode版本。 参见 视窗概述，ShowWindow ＝＝英文原文＝＝IsWindowVisible Function The IsWindowVisible function retrieves the visibility state of the specified window. Syntax BOOL IsWindowVisible( HWND hWnd ); Parameters hWnd [in] Handle to the window to test. Return Value If the specified window, its parent window, its parent's parent window, and so forth, have the WS_VISIBLE style, the return value is nonzero. Otherwise, the return value is zero. Because the return value specifies whether the window has the WS_VISIBLE style, it may be nonzero even if the window is totally obscured by other windows. Remarks The visibility state of a window is indicated by the WS_VISIBLE style bit. When WS_VISIBLE is set, the window is displayed and subsequent drawing into it is displayed as long as the window has the WS_VISIBLE style. Any drawing to a window with the WS_VISIBLE style will not be displayed if the window is obscured by other windows or is clipped by its parent window. Function Information Minimum DLL Versionuser32.dll HeaderDeclared in Winuser.h, include Windows.h Import libraryUser32.lib Minimum operating systemsWindows 95, Windows NT 3.1 UnicodeImplemented as Unicode version. See Also Windows Overview , ShowWindow ＝＝原始网址＝＝http://msdn.microsoft.com/en-us/library/ms633530(VS.85).aspx\n |
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