private static void TabControl_OnMouseDown(object sender, MouseEventArgs e)
{
//Check all the tab to determind which tab that has mouse click fall into.
foreach (TabPage tabPage in TabControl.TabPages)
{
//get the area of tab
Rectangle tabRect = TabControl.GetTabRect(TabControl.TabPages.IndexOf(tabPage));
//get the area of the "x" image
Rectangle imageXRect = new Rectangle(tabRect.Right - tabRect.Height,
tabRect.Top, tabRect.Height, tabRect.Height);
//Remove
if (imageXRect.Contains(e.Location))
{
//Safe close
if ((CurrentTextArea.requiresSaving == 1) && (Dialog.ShowSafeCloseTabDialog(tabPage) == "Cancel"))
{
break;
}
//When we close the unselected tab, it will be automatically selected
//So we need reset to the previous selected tab.
//Check whether the previous selected tab is existing
if (PreviousSelectedTabpage != null && TabControl.TabPages.Contains(PreviousSelectedTabpage))
{
TabControl.SelectedTab = PreviousSelectedTabpage;
}
else
{
//if not, set the next selected tab to the nearest tab
if (TabControl.SelectedIndex == 0)
{
TabControl.SelectedIndex = 1;
}
else
{
TabControl.SelectedIndex -= 1;
}
}
//remove tabpage info in listOfTabPageInfo
RemoveTabPageInfo(tabPage);
//remove tab page
TabControl.TabPages.Remove(tabPage);
break;
}
}
if (TabControl.TabPages.Count > 0)
{
CurrentTextArea.Focus();
}
}
private static void TabControl_DragTab(object sender, DragEventArgs e)
{
//If the thing dragged over isn't a Tab
if (!e.Data.GetDataPresent(typeof(TabPage)))
{
return;
}
//Get the tab being dragged
TabPage draggedTab = (TabPage)e.Data.GetData(typeof(TabPage));
//Get the index of the tab being dragged
int draggedTabIndex = TabControl.TabPages.IndexOf(draggedTab);
//Get the index of the tab having the mouse on it
int hoveredTabIndex = GetHoverTabIndex();
//If the mouse is not on any Tab
if (hoveredTabIndex < 0)
{
e.Effect = DragDropEffects.None;
return;
}
//Change the type of cursor showing while dragging
e.Effect = DragDropEffects.Move;
TabPage hoveredTab = TabControl.TabPages[hoveredTabIndex];
if (draggedTab == hoveredTab)
{
return;
}
SwapTabPages(draggedTab, hoveredTab);
//Set the selected tab to the dragged tab
TabControl.SelectedTab = draggedTab;
CurrentTextArea.Focus();
}
