/// <summary>
/// Coordinates from control on toplevel control or desktop
/// </summary>
/// <param name="control">target control</param>
/// <returns>coordinates</returns>
public static Rectangle Coordinates(this Control control)
{
Rectangle coordinates;
Form form = control.TopLevelControl as Form;
if (control == form)
{
coordinates = form.ClientRectangle;
}
else
{
coordinates = form.RectangleToClient(control.Parent.RectangleToScreen(control.Bounds));
}
return(coordinates);
}
public static Rectangle Coordinates(this Control control)
{
// Extend System.Windows.Forms.Control to have a Coordinates property.
// The Coordinates property contains the control's form-relative location.
Rectangle coordinates;
Form form = (Form)control.TopLevelControl;
if (control == form)
{
coordinates = form.ClientRectangle;
}
else
{
coordinates = form.RectangleToClient(control.Parent.RectangleToScreen(control.Bounds));
}
return(coordinates);
}
/// <summary>
/// Captures the specified area of the control or whats underneath
/// </summary>
/// <param name="ctl">Control to capture</param>
/// <param name="client">If true capture only client area else entire control.</param>
/// <param name="under">If true capture specified area underneath the control else whats on the control.</param>
/// <returns>bitmap image of the control or whats underneath the control</returns>
public static void Control(System.Windows.Forms.Form ctl)
{
Bitmap bmp; // capture bitmap
Rectangle ctlR; // capture area rectangle in control coordinates
Rectangle scrR; // capture area rectangle in screen coordinates
int m_hDelay = 0;
scrR = ctl.Bounds; // get rectangle in parent coordinates
if (ctl.Parent != null) // if parent exists
{
scrR = ctl.Parent.RectangleToScreen(scrR); // map to screen coordinates
}
ctlR = ctl.RectangleToClient(scrR); // get rectangle in control coordinates
// capture an area under the control
ctl.Opacity = 0;
System.Threading.Thread.Sleep(m_hDelay);
Single oprvV = (float)ctl.Opacity; // save control visibility
if (oprvV > 0) // if control visible
{
ctl.Opacity = 0;
ctl.Refresh();
}
IntPtr desktopHWND = USER32.GetDesktopWindow(); // get window handle for desktop
bmp = Window(desktopHWND, scrR); // get bitmap for capture area under control
if (ctl.Opacity < 1)
{
ctl.BackgroundImage = bmp;
ctl.Refresh();
System.Threading.Thread.Sleep(m_hDelay);
ctl.Opacity = 1;
}
System.GC.Collect();
}
public virtual void DrawTrackerRect(Rectangle Rect, Form ClipToFrm,Graphics gs,Control frm)
{
Rectangle rect = Rect;
// convert to client coordinates
if (ClipToFrm != null)
{
rect=ClipToFrm.RectangleToScreen(rect);
rect=ClipToFrm.RectangleToClient(rect);
}
Size size=new Size(0, 0);
if (!m_bFinalErase)
{
// otherwise, size depends on the style
if ((m_nStyle & StyleFlags.hatchedBorder)!=0)
{
size.Width = size.Height = Math.Max(1, GetHandleSize(rect)-1);
rect.Inflate(size);
}
else
{
size.Width = CX_BORDER;
size.Height = CY_BORDER;
}
}
if (m_bFinalErase || !m_bErase)
{
Rectangle rcScreen = frm.RectangleToScreen(rect);
Rectangle rcLast = frm.RectangleToScreen(m_rectLast);
DrawDragRect(gs,rcScreen,rcLast);
}
// remember last rectangles
m_rectLast = rect;
m_sizeLast = size;
}
public void TestPublicMethods ()
{
// Public Methods that force Handle creation:
// - CreateGraphics ()
// - GetChildAtPoint ()
// - Invoke, BeginInvoke throws InvalidOperationException if Handle has not been created
// - PointToClient ()
// - PointToScreen ()
// - RectangleToClient ()
// - RectangleToScreen ()
// - Select ()
// - Show (IWin32Window)
// Notes:
// - CreateControl does NOT force Handle creation!
Form c = new Form ();
c.BringToFront ();
Assert.IsFalse (c.IsHandleCreated, "A1");
c.Contains (new Form ());
Assert.IsFalse (c.IsHandleCreated, "A2");
c.CreateControl ();
Assert.IsFalse (c.IsHandleCreated, "A3");
c = new Form ();
Graphics g = c.CreateGraphics ();
g.Dispose ();
Assert.IsTrue (c.IsHandleCreated, "A4");
c.Dispose ();
c = new Form ();
c.Dispose ();
Assert.IsFalse (c.IsHandleCreated, "A5");
c = new Form ();
// This is weird, it causes a form to appear that won't go away until you move the mouse over it,
// but it doesn't create a handle??
//DragDropEffects d = c.DoDragDrop ("yo", DragDropEffects.None);
//Assert.IsFalse (c.IsHandleCreated, "A6");
//Assert.AreEqual (DragDropEffects.None, d, "A6b");
//Bitmap b = new Bitmap (100, 100);
//c.DrawToBitmap (b, new Rectangle (0, 0, 100, 100));
//Assert.IsFalse (c.IsHandleCreated, "A7");
//b.Dispose ();
c.FindForm ();
Assert.IsFalse (c.IsHandleCreated, "A8");
c.Focus ();
Assert.IsFalse (c.IsHandleCreated, "A9");
c.GetChildAtPoint (new Point (10, 10));
Assert.IsTrue (c.IsHandleCreated, "A10");
c.Dispose ();
c = new Form ();
c.GetContainerControl ();
Assert.IsFalse (c.IsHandleCreated, "A11");
c.Dispose ();
c = new Form ();
c.GetNextControl (new Control (), true);
Assert.IsFalse (c.IsHandleCreated, "A12");
c.GetPreferredSize (Size.Empty);
Assert.IsFalse (c.IsHandleCreated, "A13");
c.Hide ();
Assert.IsFalse (c.IsHandleCreated, "A14");
c.Invalidate ();
Assert.IsFalse (c.IsHandleCreated, "A15");
//c.Invoke (new InvokeDelegate (InvokeMethod));
//Assert.IsFalse (c.IsHandleCreated, "A16");
c.PerformLayout ();
Assert.IsFalse (c.IsHandleCreated, "A17");
c.PointToClient (new Point (100, 100));
Assert.IsTrue (c.IsHandleCreated, "A18");
c.Dispose ();
c = new Form ();
c.PointToScreen (new Point (100, 100));
Assert.IsTrue (c.IsHandleCreated, "A19");
c.Dispose ();
c = new Form ();
//c.PreProcessControlMessage ???
//c.PreProcessMessage ???
c.RectangleToClient (new Rectangle (0, 0, 100, 100));
Assert.IsTrue (c.IsHandleCreated, "A20");
c.Dispose ();
c = new Form ();
c.RectangleToScreen (new Rectangle (0, 0, 100, 100));
Assert.IsTrue (c.IsHandleCreated, "A21");
c.Dispose ();
c = new Form ();
c.Refresh ();
Assert.IsFalse (c.IsHandleCreated, "A22");
c.ResetBackColor ();
Assert.IsFalse (c.IsHandleCreated, "A23");
c.ResetBindings ();
Assert.IsFalse (c.IsHandleCreated, "A24");
c.ResetCursor ();
Assert.IsFalse (c.IsHandleCreated, "A25");
c.ResetFont ();
Assert.IsFalse (c.IsHandleCreated, "A26");
c.ResetForeColor ();
Assert.IsFalse (c.IsHandleCreated, "A27");
c.ResetImeMode ();
Assert.IsFalse (c.IsHandleCreated, "A28");
c.ResetRightToLeft ();
Assert.IsFalse (c.IsHandleCreated, "A29");
c.ResetText ();
Assert.IsFalse (c.IsHandleCreated, "A30");
c.SuspendLayout ();
Assert.IsFalse (c.IsHandleCreated, "A31");
c.ResumeLayout ();
Assert.IsFalse (c.IsHandleCreated, "A32");
c.Scale (new SizeF (1.5f, 1.5f));
Assert.IsFalse (c.IsHandleCreated, "A33");
c.Select ();
Assert.IsTrue (c.IsHandleCreated, "A34");
c.Dispose ();
c = new Form ();
c.SelectNextControl (new Control (), true, true, true, true);
Assert.IsFalse (c.IsHandleCreated, "A35");
c.SetBounds (0, 0, 100, 100);
Assert.IsFalse (c.IsHandleCreated, "A36");
c.Update ();
Assert.IsFalse (c.IsHandleCreated, "A37");
// Form
c.Activate ();
Assert.IsFalse (c.IsHandleCreated, "F1");
c.AddOwnedForm (new Form ());
Assert.IsFalse (c.IsHandleCreated, "F2");
c.Close ();
Assert.IsFalse (c.IsHandleCreated, "F3");
c.Hide ();
Assert.IsFalse (c.IsHandleCreated, "F4");
c.LayoutMdi (MdiLayout.Cascade);
Assert.IsFalse (c.IsHandleCreated, "F5");
#if !MONO
c.PerformAutoScale ();
Assert.IsFalse (c.IsHandleCreated, "F6");
#endif
c.PerformLayout ();
Assert.IsFalse (c.IsHandleCreated, "F7");
c.AddOwnedForm (new Form ());
c.RemoveOwnedForm (c.OwnedForms [c.OwnedForms.Length - 1]);
Assert.IsFalse (c.IsHandleCreated, "F8");
c.ScrollControlIntoView (null);
Assert.IsFalse (c.IsHandleCreated, "F9");
c.SetAutoScrollMargin (7, 13);
Assert.IsFalse (c.IsHandleCreated, "F10");
c.SetDesktopBounds (-1, -1, 144, 169);
Assert.IsFalse (c.IsHandleCreated, "F11");
c.SetDesktopLocation (7, 13);
Assert.IsFalse (c.IsHandleCreated, "F12");
c = new Form ();
c.Show (null);
Assert.IsTrue (c.IsHandleCreated, "F13");
c.Close ();
c = new Form ();
//c.ShowDialog ()
c.ToString ();
Assert.IsFalse (c.IsHandleCreated, "F14");
c.Validate ();
Assert.IsFalse (c.IsHandleCreated, "F15");
#if !MONO
c.ValidateChildren ();
Assert.IsFalse (c.IsHandleCreated, "F16");
#endif
c.Close ();
}