ToolStripItem.AllowDrop Properti
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Mendapatkan atau mengatur nilai yang menunjukkan apakah pengurutan ulang seret dan letakkan dan item ditangani melalui peristiwa yang Anda terapkan.
public:
virtual property bool AllowDrop { bool get(); void set(bool value); };
[System.ComponentModel.Browsable(false)]
public virtual bool AllowDrop { get; set; }
[<System.ComponentModel.Browsable(false)>]
member this.AllowDrop : bool with get, set
Public Overridable Property AllowDrop As Boolean
Nilai Properti
true
jika operasi seret dan letakkan diizinkan dalam kontrol; jika tidak, false
. Default adalah false
.
- Atribut
Pengecualian
AllowDrop dan AllowItemReorder keduanya diatur ke true
.
Contoh
Contoh kode berikut menunjukkan cara mengatur AllowDrop properti . Contoh kode ini adalah bagian dari contoh yang lebih besar yang disediakan untuk ToolStripItem kelas .
// This utility method creates a RolloverItem
// and adds it to a ToolStrip control.
private RolloverItem CreateRolloverItem(
ToolStrip owningToolStrip,
string txt,
Font f,
string imgKey,
TextImageRelation tir,
string backImgKey)
{
RolloverItem item = new RolloverItem();
item.Alignment = ToolStripItemAlignment.Left;
item.AllowDrop = false;
item.AutoSize = true;
item.BackgroundImage = owningToolStrip.ImageList.Images[backImgKey];
item.BackgroundImageLayout = ImageLayout.Center;
item.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText;
item.DoubleClickEnabled = true;
item.Enabled = true;
item.Font = f;
// These assignments are equivalent. Each assigns an
// image from the owning toolstrip's image list.
item.ImageKey = imgKey;
//item.Image = owningToolStrip.ImageList.Images[infoIconKey];
//item.ImageIndex = owningToolStrip.ImageList.Images.IndexOfKey(infoIconKey);
item.ImageScaling = ToolStripItemImageScaling.None;
item.Owner = owningToolStrip;
item.Padding = new Padding(2);
item.Text = txt;
item.TextAlign = ContentAlignment.MiddleLeft;
item.TextDirection = ToolStripTextDirection.Horizontal;
item.TextImageRelation = tir;
return item;
}
' This utility method creates a RolloverItem
' and adds it to a ToolStrip control.
Private Function CreateRolloverItem( _
ByVal owningToolStrip As ToolStrip, _
ByVal txt As String, _
ByVal f As Font, _
ByVal imgKey As String, _
ByVal tir As TextImageRelation, _
ByVal backImgKey As String) As RolloverItem
Dim item As New RolloverItem()
item.Alignment = ToolStripItemAlignment.Left
item.AllowDrop = False
item.AutoSize = True
item.BackgroundImage = owningToolStrip.ImageList.Images(backImgKey)
item.BackgroundImageLayout = ImageLayout.Center
item.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText
item.DoubleClickEnabled = True
item.Enabled = True
item.Font = f
' These assignments are equivalent. Each assigns an
' image from the owning toolstrip's image list.
item.ImageKey = imgKey
'item.Image = owningToolStrip.ImageList.Images[infoIconKey];
'item.ImageIndex = owningToolStrip.ImageList.Images.IndexOfKey(infoIconKey);
item.ImageScaling = ToolStripItemImageScaling.None
item.Owner = owningToolStrip
item.Padding = New Padding(2)
item.Text = txt
item.TextAlign = ContentAlignment.MiddleLeft
item.TextDirection = ToolStripTextDirection.Horizontal
item.TextImageRelation = tir
Return item
End Function
Keterangan
AllowDrop Atur properti ke true
dan atur AllowItemReorder properti untuk false
merespons perilaku seret dan letakkan yang telah Anda tentukan dalam ToolStripItem.DragEnterperistiwa , ToolStripItem.DragLeave, dan ToolStripItem.DragDrop .
AllowDrop Atur properti ke false
dan atur AllowItemReorder properti ke true
untuk menyebabkan ToolStripItem kelas menangani seret dan letakkan dan pengurutan ulang item secara privat.
Mengatur properti AllowDrop dan AllowItemReorder untuk true
melemparkan pengecualian.