在建立C#的无边框窗体的时候,在任务栏上点击窗体的时候,无法显示系统的右键菜单。由于是C#隐藏掉了系统的右键菜单,使用以下代码显示出来就可以了。不过存在一个问题是,最大化的时候会把任务栏也覆盖掉,界面占满整个屏幕
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1、在Class里面加入
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
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namespace WindowsFormsApplication1
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...{
class Class1
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...{
System.Windows.Forms.Form FormA;
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public void Skin(System.Windows.Forms.Form frm)
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...{
FormA = frm;
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frm.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
frm.BackColor = System.Drawing.SystemColors.Desktop;
frm.TransparencyKey = System.Drawing.SystemColors.Desktop;
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NoneBorder();
}
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// http://blog.csdn.net/hbxtlhx/archive/2007/08/01/1721061.aspx
[DllImport("user32.dll", EntryPoint = "GetWindowLong", CharSet = CharSet.Auto)]
public static extern int GetWindowLong(HandleRef hWnd, int nIndex);
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[DllImport("user32.dll", EntryPoint = "SetWindowLong", CharSet = CharSet.Auto)]
public static extern IntPtr SetWindowLong(HandleRef hWnd, int nIndex, int dwNewLong);
void NoneBorder()
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...{
int WS_SYSMENU = 0x00080000; // 系统菜单
int WS_MINIMIZEBOX = 0x20000; // 最大最小化按钮
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int windowLong = (GetWindowLong(new HandleRef(FormA, FormA.Handle), -16));
SetWindowLong(new HandleRef(FormA, FormA.Handle), -16, windowLong | WS_SYSMENU | WS_MINIMIZEBOX);
}
}
}
2、在Form中调用
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
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namespace WindowsFormsApplication1
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...{
public partial class Form1 : Form
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...{
Class1 SkinClass = new Class1();
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public Form1()
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...{
InitializeComponent();
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SkinClass.Skin(this);
}
}
}