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C#-WinForm-无边框窗体的移动和阴影-API

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//窗体移动API,先导入命名空间,在委托MouseDown事件
//移动前准备
[DllImport("user32.dll")]
public static extern bool ReleaseCapture();
[DllImport("user32.dll")]
public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, 

int IParam);
public const int WM_SYSCOMMAND = 0x0112;
public const int SC_MOVE = 0xF010;
public const int HTCAPTION = 0x0002;
[DllImport("user32")]
private static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, 

IntPtr lParam);
private const int WM_SETREDRAW = 0xB;

//窗体移动事件
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
    if (this.WindowState == FormWindowState.Normal)
    {
        ReleaseCapture();
        SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + 

HTCAPTION, 0);
    }
}
无边框窗体移动API

复制API代码到窗体代码结构函数下方,引用命名空间,委托MouseDown的事件(李献策lxc)

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     //窗体阴影API,放在结构函数上方,修改结构函数即可
        const int CS_DropSHADOW = 0x20000;
        const int GCL_STYLE = (-26);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int SetClassLong(IntPtr hwnd, int nIndex, int dwNewLong);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int GetClassLong(IntPtr hwnd, int nIndex);


        public Form1()
        {
            InitializeComponent();
            SetClassLong(this.Handle, GCL_STYLE, GetClassLong(this.Handle, GCL_STYLE) | CS_DropSHADOW);
        }
窗体阴影API

复制API代码到结构函数上方,修改结构函数即可

 

API - 通用功能接口

做一个如下无边框的窗体

一、五边框窗体移动

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复制API代码到窗体代码结构函数下方,引用命名空间,委托MouseDown的事件

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public Form1()
        {
            InitializeComponent();
        }

        //窗体移动API
        [DllImport("user32.dll")]
        public static extern bool ReleaseCapture();
        [DllImport("user32.dll")]
        public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int IParam);
        public const int WM_SYSCOMMAND = 0x0112;
        public const int SC_MOVE = 0xF010;
        public const int HTCAPTION = 0x0002;
        [DllImport("user32")]
        private static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, IntPtr lParam);
        private const int WM_SETREDRAW = 0xB;

        private void Form1_MouseDown(object sender, MouseEventArgs e)
        {
            if (this.WindowState == FormWindowState.Normal)
            {
                ReleaseCapture();
                SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
            }
        }
无窗体移动代码 复制后

二、窗体阴影

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C#-WinForm-无边框窗体的移动和阴影-API