private void Button1_MouseDown(object sender, MouseEventArgs e)
{
int index = (int)this.numericUpDownColumn.Value;
var col = this.control.Columns[index];
this.resizeDragInfo = new ResizeDragInfo(col, e.X);
}
public static void ResizeDrag(ResizeDragInfo dragInfo, int mouseX, int minimumColumnWidth)
{
if (!dragInfo.Active)
{
return;
}
int dx = mouseX - dragInfo.MouseX;
dragInfo.Column.Width = Math.Max(minimumColumnWidth, dragInfo.StartWidth + dx);
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (e.Button != MouseButtons.Left)
{
return;
}
int[] columnWidths = ColumnPositioning.CalculateColumnWidths(this.Columns, this.Width, 10, out _, out _);
ColumnPositioning.HitTest(columnWidths, this.GetHScrollValue(), e.X, 5, out int columnIndex, out bool resizeHandle);
if (resizeHandle)
{
this.resizeDragInfo = new ResizeDragInfo(this.Columns[columnIndex], e.X);
}
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (e.Button == MouseButtons.Right && this.resizeDragInfo.Active)
{
// Right click during resize - revert
this.resizeDragInfo.Column.Width = this.resizeDragInfo.StartWidth;
this.resizeDragInfo = default(ResizeDragInfo);
this.RecalculateScrollBar();
return;
}
if (e.Button != MouseButtons.Left)
{
return;
}
this.resizeDragInfo = default(ResizeDragInfo);
}
private void Button1_MouseUp(object sender, MouseEventArgs e)
{
this.resizeDragInfo = default(ResizeDragInfo);
}