protected virtual void OnMoving(MovingEventArgs mea)
{
if (Moving != null)
{
Moving(this, mea);
}
}
private void OurWndProc(ref Message m)
{
switch (m.Msg)
{
case 0x0216: // WM_MOVING
unsafe
{
int * p = (int *)m.LParam;
Rectangle rect = Rectangle.FromLTRB(p[0], p[1], p[2], p[3]);
MovingEventArgs mea = new MovingEventArgs(rect);
OnMoving(mea);
p[0] = mea.Rectangle.Left;
p[1] = mea.Rectangle.Top;
p[2] = mea.Rectangle.Right;
p[3] = mea.Rectangle.Bottom;
m.Result = new IntPtr(1);
}
break;
// WinForms doesn't handle this message correctly and wrongly returns 0 instead of 1.
case 0x0011: // WM_QUERYENDSESSION
CancelEventArgs e = new CancelEventArgs();
OnQueryEndSession(e);
m.Result = e.Cancel ? IntPtr.Zero : new IntPtr(1);
break;
default:
base.WndProc(ref m);
break;
}
}
protected override void OnMoving(MovingEventArgs mea)
{
ISnapManagerHost snapHost = this.Owner as ISnapManagerHost;
if (snapHost != null)
{
SnapManager sm = snapHost.SnapManager;
// Make sure the window titlebar always follows a constant distance from the mouse cursor
// Otherwise the window may "slip" as it snaps and unsnaps
if (!this.moving)
{
this.movingCursorDelta = new Size(
Cursor.Position.X - mea.Rectangle.X,
Cursor.Position.Y - mea.Rectangle.Y);
this.moving = true;
}
mea.Rectangle = new Rectangle(
Cursor.Position.X - this.movingCursorDelta.Width,
Cursor.Position.Y - this.movingCursorDelta.Height,
mea.Rectangle.Width,
mea.Rectangle.Height);
this.snapObstacle.SetBounds(mea.Rectangle);
Point pt = mea.Rectangle.Location;
Point newPt = sm.AdjustObstacleDestination(this.SnapObstacle, pt);
Rectangle newRect = new Rectangle(newPt, mea.Rectangle.Size);
this.snapObstacle.SetBounds(newRect);
mea.Rectangle = newRect;
}
base.OnMoving(mea);
}
protected override void OnMoving(MovingEventArgs mea)
{
ISnapManagerHost snapHost = this.Owner as ISnapManagerHost;
if (snapHost != null)
{
SnapManager sm = snapHost.SnapManager;
// Make sure the window titlebar always follows a constant distance from the mouse cursor
// Otherwise the window may "slip" as it snaps and unsnaps
if (!this.moving)
{
this.movingCursorDelta = new Size(
Cursor.Position.X - mea.Rectangle.X,
Cursor.Position.Y - mea.Rectangle.Y);
this.moving = true;
}
mea.Rectangle = new Rectangle(
Cursor.Position.X - this.movingCursorDelta.Width,
Cursor.Position.Y - this.movingCursorDelta.Height,
mea.Rectangle.Width,
mea.Rectangle.Height);
this.snapObstacle.SetBounds(mea.Rectangle);
Point pt = mea.Rectangle.Location;
Point newPt = sm.AdjustObstacleDestination(this.SnapObstacle, pt);
Rectangle newRect = new Rectangle(newPt, mea.Rectangle.Size);
this.snapObstacle.SetBounds(newRect);
mea.Rectangle = newRect;
}
base.OnMoving(mea);
}
private void OurWndProc(ref Message m)
{
switch (m.Msg)
{
case 0x0216: // WM_MOVING
unsafe
{
int *p = (int *)m.LParam;
Rectangle rect = Rectangle.FromLTRB(p[0], p[1], p[2], p[3]);
MovingEventArgs mea = new MovingEventArgs(rect);
OnMoving(mea);
p[0] = mea.Rectangle.Left;
p[1] = mea.Rectangle.Top;
p[2] = mea.Rectangle.Right;
p[3] = mea.Rectangle.Bottom;
m.Result = new IntPtr(1);
}
break;
// WinForms doesn't handle this message correctly and wrongly returns 0 instead of 1.
case 0x0011: // WM_QUERYENDSESSION
CancelEventArgs e = new CancelEventArgs();
OnQueryEndSession(e);
m.Result = e.Cancel ? IntPtr.Zero : new IntPtr(1);
break;
default:
base.WndProc(ref m);
break;
}
}
protected virtual void OnMoving(MovingEventArgs mea)
{
if (Moving != null)
{
Moving(this, mea);
}
}
private void ParentForm_Moving(object sender, MovingEventArgs e)
{
UpdateSnapObstacle();
}
protected virtual void OnMoving(MovingEventArgs mea)
{
Moving?.Invoke(this, mea);
}