WM_SETTEXT写汉字

Question

我想设置我的编辑控件的文本。当我这样做的时候，新内容是中文的。

例如，这个：

[DllImport("user32.dll")]
public static extern int SendMessageW([InAttribute] System.IntPtr hWnd, int Msg, int wParam, string lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
internal static extern IntPtr GetFocus();

IntPtr c = GetFocus();
SendMessageW(c, 12, 0, "Test"); //Notice that 12 = WM_SETTEXT

将我的编辑控件设置为：扑米

Answer 1

根据 pinvoke.net，您需要在字符串参数上添加一个 MarshalAs 属性：

[DllImport("user32.dll")]
public static extern int SendMessageW(
    [InAttribute] System.IntPtr hWnd, 
    int Msg, 
    int wParam, 
    [MarshalAs(UnmanagedType.LPWStr)] string lParam);

WM_SETTEXT写汉字

WM_SETTEXT writes Chinese letters

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