WM_SETTEXT写中文字母

Question

我想设置编辑控件的文本。当我这样做的时候，新内容是中文。

例如：

[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：敔瑳

Answer 1

根据pinvoke.net，您需要字符串参数上的MarshalAs属性：

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