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realgetwindowclass (user32)
 
.
Summary

C# Signature:

[DllImport("user32.dll")]
static extern uint RealGetWindowClass(IntPtr hwnd, [Out] StringBuilder pszType,
   uint cchType);

VB Signature:

<DllImport("user32.dll", SetLastError:=True)> _
Private Shared Function RealGetWindowClass(ByVal hWnd As IntPtr, _
                        ByVal lpString As StringBuilder, _
                        ByVal nMaxCount As Integer) As Integer
End Function

User-Defined Types:

None.

Notes:

This API does not return the 'real' class name in xp when the control is themed So class names like "WindowsForms10.EDIT.app3" will not return the 'Edit' class name if the app is themed

Tips & Tricks:

Please add some!

Sample Code:

public static string RealGetWindowClassM(IntPtr hWnd)
{
    StringBuilder pszType = new StringBuilder();
    pszType.Capacity = 255;
    RealGetWindowClass(hWnd, pszType, (UInt32)pszType.Capacity);
    return pszType.ToString();
}

Alternative Managed API:

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Documentation

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