public CustomTabControl() : base()
{
if (this._DisplayManager.Equals(TabControlDisplayManager.Custom))
{
this.SetStyle(ControlStyles.UserPaint, true);
this.ItemSize = new Size(0, 15);
this.Padding = new Point(9, 0);
}
this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
this.SetStyle(ControlStyles.ResizeRedraw, true);
this.ResizeRedraw = true;
_priorSelectedIndex = -1;
_priorAlignment = TabAlignment.Left;
ImageOffset = new System.Drawing.Point(16, 2);
// We are simulating a close button with the close images. The
// image is a stylized X from the VS2008 image library. There are
// three versions - a regular CloseImage, the greyed version for
// tabs that are not currently selected, and the hover image,
// which is a highlighted (red) form that gets displayed when the
// mouse hovers over the X. The effect is to make the image itself
// highlight like a normal button might.
//
// OnMouseHover doesn't really work for the purposes of the close
// "button". The close image isn't really a Control, so it gets no
// Hover events. The TabControl is a Control, and it gets hover
// events, but only one, on entry to the control. Moving the
// mouse around on different tabs doesn't send a new hover event.
// Therefore, we need to track the mouse events, and simulate the
// effect. We use a timer for that purpose. It gets reset
// whenever the mouse moves and is present on the close image. If
// the mouse stops moving for a period of _hoverInterval ms, then
// the timer fires and the close image is painted with the hover
// image (a red X). If the mouse moves away from the closeimage
// on the selected tab, the timer gets disabled.
_hoverInterval = 110;
_hoverTimer = new System.Timers.Timer
{
Interval = _hoverInterval,
AutoReset = false
};
// Hook up the Elapsed event for the timer.
_hoverTimer.Elapsed += new System.Timers.ElapsedEventHandler(OnTimedEvent);
mhs = new MouseHoverState();
// get the images
System.Reflection.Assembly assembly = this.GetType().Assembly;
System.IO.Stream s1 =
assembly.GetManifestResourceStream("CustomControls.Resources.Close.png");
var b = new Bitmap(s1);
s1.Dispose();
//b.MakeTransparent();
CloseImage = b;
s1 = assembly.GetManifestResourceStream("CustomControls.Resources.Close-grayed.png");
b = new Bitmap(s1);
s1.Dispose();
//b.MakeTransparent();
CloseImageGray = b;
s1 = assembly.GetManifestResourceStream("CustomControls.Resources.Close-hover.png");
b = new Bitmap(s1);
s1.Dispose();
//b.MakeTransparent();
CloseImageHover = b;
//System.Console.WriteLine("Images: Close({0}) Gray({1}) Hover({2})", CloseImage, CloseImageGray, CloseImageHover);
}
public CustomTabControl()
: base()
{
if (this._DisplayManager.Equals(TabControlDisplayManager.Custom))
{
this.SetStyle(ControlStyles.UserPaint, true);
this.ItemSize = new Size(0, 15);
this.Padding = new Point(9,0);
}
this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
this.SetStyle(ControlStyles.ResizeRedraw, true);
this.ResizeRedraw = true;
_priorSelectedIndex = -1;
_priorAlignment = TabAlignment.Left;
ImageOffset = new System.Drawing.Point(16, 2);
// We are simulating a close button with the close images. The
// image is a stylized X from the VS2008 image library. There are
// three versions - a regular CloseImage, the greyed version for
// tabs that are not currently selected, and the hover image,
// which is a highlighted (red) form that gets displayed when the
// mouse hovers over the X. The effect is to make the image itself
// highlight like a normal button might.
//
// OnMouseHover doesn't really work for the purposes of the close
// "button". The close image isn't really a Control, so it gets no
// Hover events. The TabControl is a Control, and it gets hover
// events, but only one, on entry to the control. Moving the
// mouse around on different tabs doesn't send a new hover event.
// Therefore, we need to track the mouse events, and simulate the
// effect. We use a timer for that purpose. It gets reset
// whenever the mouse moves and is present on the close image. If
// the mouse stops moving for a period of _hoverInterval ms, then
// the timer fires and the close image is painted with the hover
// image (a red X). If the mouse moves away from the closeimage
// on the selected tab, the timer gets disabled.
_hoverInterval = 110;
_hoverTimer = new System.Timers.Timer
{
Interval = _hoverInterval,
AutoReset = false
};
// Hook up the Elapsed event for the timer.
_hoverTimer.Elapsed += new System.Timers.ElapsedEventHandler(OnTimedEvent);
mhs = new MouseHoverState();
// get the images
System.Reflection.Assembly assembly = this.GetType().Assembly;
System.IO.Stream s1 =
assembly.GetManifestResourceStream("CustomControls.Resources.Close.png");
var b = new Bitmap(s1);
s1.Dispose();
//b.MakeTransparent();
CloseImage = b;
s1 = assembly.GetManifestResourceStream("CustomControls.Resources.Close-grayed.png");
b = new Bitmap(s1);
s1.Dispose();
//b.MakeTransparent();
CloseImageGray= b;
s1 = assembly.GetManifestResourceStream("CustomControls.Resources.Close-hover.png");
b = new Bitmap(s1);
s1.Dispose();
//b.MakeTransparent();
CloseImageHover= b;
//System.Console.WriteLine("Images: Close({0}) Gray({1}) Hover({2})", CloseImage, CloseImageGray, CloseImageHover);
}
