Question

将无边界表单拖到屏幕顶部时；如果Y坐标为负，则将其设置回0。我要执行的操作是将窗体拖动到顶部上方，其中Y坐标将为负，这与您在图的其他两侧相同屏幕。

这是我尝试过的：

public class MerkmalRow
{
    public string Name { get; set; }
    public string Wert { get; set; }

    public MerkmalRow(string name, string wert)
    {
        Name = name;
        Wert = wert;
    }
}

public class MerkmalSet
{
    public List<MerkmalRow> Merkmalls;

    public void AddNewRow(MerkmalRow newRow)
    {
        if (Merkmalls == null)
            Merkmalls = new List<MerkmalRow>();
        Merkmalls.Add(newRow);
    }

    public void RemoveAllInstancesOfDuplicates()
    {
        var withoutAllInstancesOfDuplicates = new List<MerkmalRow>();

        foreach (MerkmalRow entry in Merkmalls)
        {
            if (Merkmalls.Count(row =>
                    string.Equals(row.Name, entry.Name) &&
                    string.Equals(row.Wert, entry.Wert)) == 1)
            {
                withoutAllInstancesOfDuplicates.Add(entry);
            }
        }
        Merkmalls = null;
        Merkmalls = withoutAllInstancesOfDuplicates;
    }
}

这是我考虑了一段时间后能想到的最好的方法。问题在于，当释放鼠标并完成表格移动时，public partial class BorderlessForm : Form { public BorderlessForm() { InitializeComponent(); } private bool _isNegative; private Point _negative; public const int WM_NCLBUTTONDOWN = 0xA1; public const int HT_CAPTION = 0x2; [DllImport("user32.dll")] public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam); [DllImport("user32.dll")] public static extern bool ReleaseCapture(); protected override void OnMouseDown(MouseEventArgs e) { if (e.Button == MouseButtons.Left) { ReleaseCapture(); SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0); } } protected override void OnResizeEnd(EventArgs e) { if (_isNegative) { Location = _negative; } //base.OnResizeEnd(e); } protected override void OnMove(EventArgs e) { if (Location.Y < 0) { _isNegative = true; _negative = Location; } else { _isNegative = false; } //base.OnMove(e); } }会在OnMove之前被调用，然后OnResizeEnd会被设置回false。至少，我认为这是正在发生的事情。

我有正确的主意，还是有更好的方法来解决这个问题？

Answer 1

因此，我对isaeid所说的内容进行了更多的思考，并提出了解决方案。仍然不确定这是否是最好的解决方法，但这是：

close

Answer 2

您可以更改一些此类事件：

protected override void OnResizeEnd(EventArgs e)
        {
            if (_isNegative)
            {
                Location = _negative;
            }
            oldRight = this.Right;
            oldBottom = this.Bottom;
            //base.OnResizeEnd(e);
        }

        protected override void OnMove(EventArgs e)
        {
            if ( this.Right == oldRight || this.Bottom == oldBottom)
                return;
            if (Location.Y < 0)
            {
                _isNegative = true;
                _negative = Location;

            }
            else
            {
                _isNegative = false;
            }
            //base.OnMove(e);


        }

当窗口的顶部或左侧发生变化时，dotnet确定窗口的位置发生变化并调用onmove事件，我考虑窗口的右侧或底部是否未更改，因此窗口的位置未更改。

也添加此代码：

int oldBottom, oldRight;
    private void BorderlessForm_Load(object sender, EventArgs e)
    {

        oldRight = this.Right;
        oldBottom = this.Bottom;
    }

将无边界表单拖到否定位置

2 个答案: