ContextMenuUltra エクステンダー プロパティによって、コンテキスト メニューとして使用するときを除きこれは will になります。
このプロパティは読み取り専用です。
Imports System.Diagnostics Imports Infragistics.Win Imports Infragistics.Win.UltraWinToolbars Private Sub UltraToolbarsManager1_BeforeToolDropdown(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinToolbars.BeforeToolDropdownEventArgs) Handles UltraToolbarsManager1.BeforeToolDropdown Dim dr As DialogResult = MessageBox.Show(Me, "The tool with key '" + e.Tool.Key + "' is about to be dropped down. Do you want to cancel the dropdown??", "Cancelable Toolbar Event", MessageBoxButtons.YesNo) If dr = DialogResult.Yes Then e.Cancel = True End If End Sub
using System.Diagnostics; using Infragistics.Win; using Infragistics.Win.UltraWinToolbars; private void ultraToolbarsManager1_BeforeToolDropdown(object sender, Infragistics.Win.UltraWinToolbars.BeforeToolDropdownEventArgs e) { DialogResult dr = MessageBox.Show(this, "The tool with key '" + e.Tool.Key + "' is about to be dropped down. Do you want to cancel the dropdown??", "Cancelable Toolbar Event", MessageBoxButtons.YesNo); if (dr == DialogResult.Yes) e.Cancel = true; }