Funktionen der user32.dll,shell32.dll,kernel32.dll herausbekommen

The GetClassName function retrieves the name of the class to which the specified window belongs.


Syntax


    int GetClassName(      
        HWND hWnd,
        LPTSTR lpClassName,
        int nMaxCount
    );


Parameters


    hWnd
        [in] Handle to the window and, indirectly, the class to which the window belongs. 
    lpClassName
        [out] Pointer to the buffer that is to receive the class name string. 
    nMaxCount
        [in] Specifies the length, in TCHAR, of the buffer pointed to by the lpClassName parameter. The class name string is truncated if it is longer than the buffer and is always null-terminated. 


Return Value


    If the function succeeds, the return value is the number of TCHAR copied to the specified buffer.


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


Remarks


    Windows 95/98/Me: GetClassNameW is supported by the Microsoft Layer for Unicode (MSLU). To use this version, you must add certain files to your application, as outlined in Microsoft Layer for Unicode on Windows 95/98/Me Systems.


Function Information


    Minimum DLL Version	user32.dll
    Header	Declared in Winuser.h, include Windows.h
    Import library	User32.lib
    Minimum operating systems	Windows 95, Windows NT 3.1
    Unicode	Implemented as ANSI and Unicode versions. 


See Also


    Window Classes Overview, FindWindow, GetClassInfo, GetClassLong, GetClassWord


Community Content


C# declartion and example
Added by:deodorant


[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern int GetClassName(IntPtr hWnd,
   StringBuilder lpClassName,
   int nMaxCount
);


public static string GetWindowClassName(IntPtr hWnd)


{
StringBuilder buffer = new StringBuilder(128);


GetClassName(hWnd, buffer, buffer.Capacity);


return buffer.ToString();


}




vb.net syntax
Added by:dmex


<DllImport("user32.dll")> Public Shared Function GetClassName(ByVal hwnd As HandleRef, ByVal lpClassName As StringBuilder, ByVal nMaxCount As Integer) As Integer
End Function


C# syntax
Added by:dmex


[DllImport("user32.dll")]
public static extern int GetClassName(IntPtr hwnd, StringBuilder lpClassName, int nMaxCount);