代码之家 › 专栏 › 技术社区 › Ravi shankar

是否在C夏普中调整自定义窗体(具有放置阴影效果)和鼠标拖动事件控件的大小?

resize winforms c

Ravi shankar · 技术社区 · 15 年前

在我的应用程序中,我必须调整窗体的大小,以及它对鼠标拖动效果和窗体的所有控制都应该具有阴影效果。问题是,我的所有窗体都是自定义窗体(没有边框)。

提前谢谢

4 回复 | 直到 15 年前

Don Kirkby 15 年前

public partial class Form1 : Form
{
    private int bottomBorder;
    private int rightBorder;
    private Point mouseStart;
    private bool isResizing = false;

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_MouseMove(object sender, MouseEventArgs e)
    {
        if (isResizing)
        {
            var newLocation = button1.Location;
            newLocation.Offset(
                e.X - mouseStart.X,
                e.Y - mouseStart.Y);
            button1.Location = newLocation;
            this.Height = button1.Bottom + bottomBorder;
            this.Width = button1.Right + rightBorder;
            button1.Refresh();
        }

    }

    private void button1_MouseDown(object sender, MouseEventArgs e)
    {
        isResizing = true;
        mouseStart = e.Location;
    }

    private void button1_MouseUp(object sender, MouseEventArgs e)
    {
        isResizing = false;
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        bottomBorder = this.Height - button1.Bottom;
        rightBorder = this.Width - button1.Right;
    }
}

Matthew Ferreira 15 年前

public class CustomForm : Form
{
    private const int WmNcLButtonDown = 0xA1;
    private const int HtBottomRight = 17;

    [DllImport("user32.dll")]
    private static extern int ReleaseCapture();

    [DllImport("user32.dll")]
    private static extern int SendMessage(IntPtr hwnd, int msg, int wparam, int lparam);

    // elsewhere
    void ResizeForm()
    {
        ReleaseCapture();
        SendMessage(this.Handle, WmNcLButtonDown, HtBottomRight, 0);
    }
}

IndrekV 11 年前

public class CustomForm : Form
{
private const int WmNcLButtonDown = 0xA1;
private const int HtBottomRight = 17;
private const int wmNcLButtonUp = 0xA2;
private bool isResizing = false;

[DllImport("user32.dll")]
private static extern int ReleaseCapture();

[DllImport("user32.dll")]
private static extern int SendMessage(IntPtr hwnd, int msg, int wparam, int lparam);

private void resizeHandle_MouseDown(object sender, MouseEventArgs e)
{
    isResizing = true;
}

private void resizeHandle_MouseMove(object sender, MouseEventArgs e)
{
    if (isResizing)
    {
        // Check if we have released the Left mouse button
        isResizing = (e.Button == MouseButtons.Left);
        ReleaseCapture();
        if (isResizing)
        {
            SendMessage(Handle, wmNcLButtonDown, HtBottomRight, 0);
        }
        else
        {
            // Left Mouse button was released, end resizing.
            SendMessage(Handle, wmNcLButtonUp, HtBottomRight, 0);
        }
    }
}