如何为WinForm，C#制作框架? [英] How to make a frame for WinForm, C#?

问题描述

我一直在研究更改Windows窗体的边框颜色，发现这是由Windows决定的，这是有道理的，所以然后我看到有人问过这个问题的人被告知去这里<一个href ="http://customerborderform.codeplex.com/" rel ="nofollow noreferrer"> http://customerborderform.codeplex.com/该网站目前无法使用.那我必须自己制作框架吗?如果是这样，我该去哪里弄清楚呢?我正在使用Visual Studio 2012.

I've been looking into changing the color of the border for the windows form and found out it's decided by windows, ok that makes sense, so then I see that people who have asked this question before are told to go here http://customerborderform.codeplex.com/ Looks like the site isn't usable at the moment. So would I have to make my own frame? If so where would I go to figure this, out? I'm using visual studio 2012.

推荐答案

下面是绘制自己的边框，可以调整大小和移动的窗体的示例..

Here is an example of a form that draws its own border, can be resized and moved..:

public partial class BorderForm : Form
{
    public BorderForm()
    {
        InitializeComponent();
        this.FormBorderStyle = FormBorderStyle.None;
        this.DoubleBuffered = true;
        this.SetStyle(ControlStyles.ResizeRedraw, true);
        BorderColor = Color.DarkSlateGray;
    }


    private const int hWidth = 12;        // resize handle width
    private const int bWidth = 28;        // border width
    public Color BorderColor { get; set;  }

    public const int WM_NCLBUTTONDOWN = 0xA1;
    public const int HT_CAPTION = 0x2;

    [DllImportAttribute("user32.dll")]
    public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
    [DllImportAttribute("user32.dll")]
    public static extern bool ReleaseCapture();

    protected override void OnPaint(PaintEventArgs e)
    {
        // draw the border..
        using (Pen pen = new Pen(BorderColor, bWidth)
             { Alignment = System.Drawing.Drawing2D.PenAlignment.Inset})
            e.Graphics.DrawRectangle(pen, ClientRectangle);
        // now maybe draw a title text..

        base.OnPaint(e);
    }


    protected override void OnMouseDown(MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            ReleaseCapture();
            SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
        }
    }


    protected override void WndProc(ref Message m)
    {
        if (m.Msg == 0x84) // Trap WM_NCHITTEST
        {  
            Point pos = new Point(m.LParam.ToInt32() & 0xffff, m.LParam.ToInt32() >> 16);
            pos = PointToClient(pos);

            bool isTop = pos.Y <= hWidth;
            bool isBottom = pos.Y >= ClientSize.Height - hWidth;
            bool isRight = pos.X >= ClientSize.Width - hWidth;
            bool isLeft = pos.X <= hWidth;

            m.Result = (IntPtr)1;

            if (isTop) m.Result = 
                       isLeft ? (IntPtr)13 : isRight ? (IntPtr)14 : (IntPtr)12;
            else if (isBottom) m.Result = 
                 isLeft ? (IntPtr)16 : isRight ? (IntPtr)17 : (IntPtr)15;
            else if (isLeft) m.Result = (IntPtr)10;  
            else if (isRight) m.Result = (IntPtr)11;

            if ( m.Result != (IntPtr)1) return;
        }
        base.WndProc(ref m);
    }

}

WM_NCHITTEST 文档向您展示了如何模拟点击控件和调整大小框(如果需要).当然，您也应该以某种方式绘画它们！

The WM_NCHITTEST docs show you how to simulate hitting the control and resize boxes if you need those. You should paint them somehow as well, of course!

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