ToolStrip.AllowDrop 属性

  • 参考

定义

命名空间:
System.Windows.Forms
程序集:
System.Windows.Forms.dll

获取或设置一个值，该值指示是否通过你实现的事件来处理拖放和项重新排序。

public:
 virtual property bool AllowDrop { bool get(); void set(bool value); };
public override bool AllowDrop { get; set; }
member this.AllowDrop : bool with get, set
Public Overrides Property AllowDrop As Boolean

属性值

Boolean

如果通过您实现的事件来控制拖放和项重新排序，为 true；否则为 false。

例外

ArgumentException

AllowDrop 和 AllowItemReorder 均设置为 true。

示例

下面的代码示例演示了设置常见 ToolStrip 属性（包括 属性）的 AllowDrop 语法。

// This is an example of some common ToolStrip property settings.
// 
toolStrip1.AllowDrop = false;
toolStrip1.AllowItemReorder = true;
toolStrip1.AllowMerge = false;
toolStrip1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
            | System.Windows.Forms.AnchorStyles.Right)));
toolStrip1.AutoSize = false;
toolStrip1.CanOverflow = false;
toolStrip1.Cursor = System.Windows.Forms.Cursors.Cross;
toolStrip1.DefaultDropDownDirection = System.Windows.Forms.ToolStripDropDownDirection.BelowRight;
toolStrip1.Dock = System.Windows.Forms.DockStyle.None;
toolStrip1.GripMargin = new System.Windows.Forms.Padding(3);
toolStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
toolStripButton1});
toolStrip1.ImageScalingSize = new System.Drawing.Size(20, 20);
toolStrip1.LayoutStyle = System.Windows.Forms.ToolStripLayoutStyle.HorizontalStackWithOverflow;
toolStrip1.Location = new System.Drawing.Point(0, 0);
toolStrip1.Margin = new System.Windows.Forms.Padding(1);
toolStrip1.Name = "toolStrip1";
toolStrip1.Padding = new System.Windows.Forms.Padding(0, 0, 2, 0);
toolStrip1.RenderMode = System.Windows.Forms.ToolStripRenderMode.System;
toolStrip1.ShowItemToolTips = false;
toolStrip1.Size = new System.Drawing.Size(109, 273);
toolStrip1.Stretch = true;
toolStrip1.TabIndex = 0;
toolStrip1.TabStop = true;
toolStrip1.Text = "toolStrip1";
toolStrip1.TextDirection = System.Windows.Forms.ToolStripTextDirection.Vertical90;

' This is an example of some common ToolStrip property settings.
' 
toolStrip1.AllowDrop = False
toolStrip1.AllowItemReorder = True
toolStrip1.AllowMerge = False
toolStrip1.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
toolStrip1.AutoSize = False
toolStrip1.CanOverflow = False
toolStrip1.Cursor = Cursors.Cross
toolStrip1.Dock = System.Windows.Forms.DockStyle.None
toolStrip1.DefaultDropDownDirection = ToolStripDropDownDirection.BelowRight
toolStrip1.GripMargin = New System.Windows.Forms.Padding(3)
toolStrip1.ImageScalingSize = New System.Drawing.Size(20, 20)
toolStrip1.Items.AddRange(New System.Windows.Forms.ToolStripItem() {toolStripButton1})
toolStrip1.LayoutStyle = System.Windows.Forms.ToolStripLayoutStyle.HorizontalStackWithOverflow
toolStrip1.Location = New System.Drawing.Point(0, 0)
toolStrip1.Margin = New System.Windows.Forms.Padding(1)
toolStrip1.Name = "toolStrip1"
toolStrip1.Padding = New System.Windows.Forms.Padding(0, 0, 2, 0)
toolStrip1.RenderMode = System.Windows.Forms.ToolStripRenderMode.System
toolStrip1.ShowItemToolTips = False
toolStrip1.Size = New System.Drawing.Size(109, 273)
toolStrip1.Stretch = True
toolStrip1.TabIndex = 0
toolStrip1.TabStop = True
toolStrip1.Text = "toolStrip1"
toolStrip1.TextDirection = System.Windows.Forms.ToolStripTextDirection.Vertical90

注解

将 AllowDrop 属性设置为 true ，并将 属性false设置为 AllowItemReorder 以响应在 、 Control.DragLeave和 Control.DragDrop 事件中Control.DragEnter定义的拖放行为。

将 设置为 falseAllowDrop 并将 设置为 AllowItemReordertrue ，使ToolStrip类自动处理拖放和项重新排序。 true对于两个 ToolStrip 对象，设置为 AllowItemReorder 以允许将项从一个拖动到另一个ToolStrip对象。 若要启用默认拖放，必须在拖动操作期间按 Alt 键。

将 和 AllowItemReorder 都AllowDrop设置为 true 将引发异常。

适用于

另请参阅