EventViewer Sample (C#)

This sample inspects events generated by the tab control.

The source code is located at C:\Program Files (x86)\Softelvdm\SftTabs NET 3.0\Samples\CSharp\EventViewer\Form1.cs.

using System;
using System.Drawing;
using System.Reflection;
using System.Windows.Forms;

using Softelvdm.SftTabsNET;

namespace EventViewer {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

        private string strLastEvent = "";
        private bool fLastEventDup = false;
        private int addedTabs = 0;

        // This is a small helper routine to show all properties and fields of an object
        private void DumpValues(string title, object o) {

            string s = "";

            if (strLastEvent == title) {
                if (!fLastEventDup) {
                    s = "Additional " + title + " events ... now suppressed";
                    fLastEventDup = true;
                } else
                    return;
            } else {
                strLastEvent = title;
                fLastEventDup = false;

                PropertyInfo[] api = o.GetType().GetProperties();
                foreach (PropertyInfo pi in api)
                    s += pi.Name + "=" + Describe(pi.GetValue(o, new object[] { })) + " ";
                FieldInfo[] afi = o.GetType().GetFields();
                foreach (FieldInfo fi in afi)
                    s += fi.Name + "=" + Describe(fi.GetValue(o)) + " ";
            }

            ListViewItem item = listView1.Items.Add(new ListViewItem(new string[] { title, s }));
            listView1.SelectedItems.Clear();
            item.Selected = true;
            item.EnsureVisible();
        }

        // Tabs are shown with their text instead of their class name
        private string Describe(object value) {
            TabClass tab = value as TabClass;
            if (tab != null)
                return "\"" + tab.Text + "\"";
            return value == null ? "null" : value.ToString();
        }

        private void buttonAdd_Click(object sender, EventArgs e) {
            ++addedTabs;
            TabClass tab = sftTabs1.Tabs.Add("Added " + addedTabs);
            tab.CloseButton = TabCloseButtonOptionalEnum.Always;

            // the page of the new tab is created by the control
            Label label = new Label();
            label.AutoSize = true;
            label.Location = new Point(12, 12);
            label.Text = "This tab was added by the Add Tab button. Its close button removes it.";
            tab.Page.Controls.Add(label);

            tab.Select();
        }

        private void buttonClear_Click(object sender, EventArgs e) {
            listView1.Items.Clear();
            strLastEvent = "";
            fLastEventDup = false;
        }

        private void sftTabs1_Switching(object sender, TabSwitchingEventArgs e) {
            DumpValues("Switching", e);

            // e.Cancel = true; would keep the current tab
        }

        private void sftTabs1_SwitchingDisabled(object sender, TabEventArgs e) {
            DumpValues("SwitchingDisabled", e);
        }

        private void sftTabs1_Switched(object sender, TabSwitchedEventArgs e) {
            DumpValues("Switched", e);
        }

        private void sftTabs1_SelectedIndexChanged(object sender, EventArgs e) {
            DumpValues("SelectedIndexChanged", e);
        }

        private void sftTabs1_Scrolled(object sender, TabScrolledEventArgs e) {
            DumpValues("Scrolled", e);
        }

        private void sftTabs1_PartClicked(object sender, TabPartClickedEventArgs e) {
            DumpValues("PartClicked", e);
        }

        private void sftTabs1_TabCloseButtonClicked(object sender, TabEventArgs e) {
            DumpValues("TabCloseButtonClicked", e);

            // the control does not remove the tab, the application does
            e.Tab.Remove();
        }

        private void sftTabs1_CloseButtonClicked(object sender, EventArgs e) {
            DumpValues("CloseButtonClicked", e);

            // the control's Close button removes the selected tab in this sample
            TabClass tab = sftTabs1.SelectedTab;
            if (tab != null)
                tab.Remove();
        }

        private void sftTabs1_MinimizeButtonClicked(object sender, EventArgs e) {
            DumpValues("MinimizeButtonClicked", e);
        }

        private void sftTabs1_RestoreButtonClicked(object sender, EventArgs e) {
            DumpValues("RestoreButtonClicked", e);
        }

        private void sftTabs1_DragDetected(object sender, TabDragDetectedEventArgs e) {
            DumpValues("DragDetected", e);

            // e.Handled is left False, so the control lets the user move the tab (AllowReordering property)
        }

        private void sftTabs1_TabReordered(object sender, TabReorderedEventArgs e) {
            DumpValues("TabReordered", e);
        }

        private void sftTabs1_TabAdded(object sender, TabEventArgs e) {
            DumpValues("TabAdded", e);
        }

        private void sftTabs1_TabRemoved(object sender, TabEventArgs e) {
            DumpValues("TabRemoved", e);
        }

        private void sftTabs1_ShowToolTip(object sender, TabToolTipEventArgs e) {
            DumpValues("ShowToolTip", e);

            if (e.Area == TabHitAreaEnum.Tab && e.Tab != null && e.Tab.Text == "&Tooltips") {
                e.ToolTipIcon = ToolTipIcon.Info;
                e.ToolTipTitle = "Balloon Tooltip";
                e.ToolTipStyle = Softelvdm.SftTabsNET.Controls.ToolTipAppearanceEnum.Balloon;
                e.ToolTipText = "A simple explanatory tooltip\nfor just this tab";
            }
        }

        private void sftTabs1_Enter(object sender, EventArgs e) {
            DumpValues("Enter", e);
        }

        private void sftTabs1_Leave(object sender, EventArgs e) {
            DumpValues("Leave", e);
        }

        private void sftTabs1_KeyDown(object sender, KeyEventArgs e) {
            DumpValues("KeyDown", e);
        }

        private void sftTabs1_KeyPress(object sender, KeyPressEventArgs e) {
            DumpValues("KeyPress", e);
        }

        private void sftTabs1_KeyUp(object sender, KeyEventArgs e) {
            DumpValues("KeyUp", e);
        }

        private void sftTabs1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e) {
            DumpValues("PreviewKeyDown", e);
        }

        private void sftTabs1_MouseClick(object sender, MouseEventArgs e) {
            DumpValues("MouseClick", e);
        }

        private void sftTabs1_MouseDoubleClick(object sender, MouseEventArgs e) {
            DumpValues("MouseDoubleClick", e);
        }

        private void sftTabs1_MouseDown(object sender, MouseEventArgs e) {
            DumpValues("MouseDown", e);
        }

        private void sftTabs1_MouseEnter(object sender, EventArgs e) {
            DumpValues("MouseEnter", e);
        }

        private void sftTabs1_MouseHover(object sender, EventArgs e) {
            DumpValues("MouseHover", e);
        }

        private void sftTabs1_MouseLeave(object sender, EventArgs e) {
            DumpValues("MouseLeave", e);
        }

        private void sftTabs1_MouseMove(object sender, MouseEventArgs e) {
            // DumpValues("MouseMove", e);  // deliberately suppressed
        }

        private void sftTabs1_MouseMoveHoverTimer(object sender, EventArgs e) {
            DumpValues("MouseMoveHoverTimer", e);
        }

        private void sftTabs1_MouseMoveTimer(object sender, EventArgs e) {
            DumpValues("MouseMoveTimer", e);
        }

        private void sftTabs1_MouseUp(object sender, MouseEventArgs e) {
            DumpValues("MouseUp", e);
        }

        private void sftTabs1_MouseWheel(object sender, MouseEventArgs e) {
            DumpValues("MouseWheel", e);
        }

        // The control validates the control with the focus before the user switches to another tab
        private void textBox1_Validating(object sender, System.ComponentModel.CancelEventArgs e) {
            if (textBox1.Text.Trim() == "") {
                e.Cancel = true;
                DumpValues("textBox1 Validating (canceled, the text box is empty)", e);
            }
        }
    }
}