protected void OnHooverValue(HooverValueEventArgs e)
{
if (HooverValue != null)
HooverValue(this, e);
}
public bool PreFilterMessage(ref Message m)
{
if (!this._bMouseTrackingOn)
return false;
if (m.Msg == (int) Msg.WM_MOUSEMOVE) {
int X = 0;
int Y = 0;
// The mouse coordinate are measured in screen coordinates because thats what
// Control.MousePosition returns. The Message,LParam value is not used because
// it returns the mouse position relative to the control the mouse is over.
// Chalk and cheese.
Point pointScreen = Control.MousePosition;
// Get the origin of this control in screen coordinates so that later we can
// compare it against the mouse point to determine it we've hit this control.
Point pointClientOrigin = new Point(X, Y);
pointClientOrigin = PointToScreen(pointClientOrigin);
_bDrawLine = false;
_bInControl = false;
HooverValueEventArgs eHoover = null;
// Work out whether the mouse is within the Y-axis bounds of a vertical ruler or
// within the X-axis bounds of a horizontal ruler
if (this.Orientation == OrientationMode.Horizontal) {
_bDrawLine = (pointScreen.X >= pointClientOrigin.X) &&
(pointScreen.X <= pointClientOrigin.X + this.Width);
}
else {
_bDrawLine = (pointScreen.Y >= pointClientOrigin.Y) &&
(pointScreen.Y <= pointClientOrigin.Y + this.Height);
}
// If the mouse is in valid position...
if (_bDrawLine) {
// ...workout the position of the mouse relative to the
X = pointScreen.X - pointClientOrigin.X;
Y = pointScreen.Y - pointClientOrigin.Y;
// Determine whether the mouse is within the bounds of the control itself
_bInControl = (this.ClientRectangle.Contains(new Point(X, Y)));
// Make the relative mouse position available in pixel relative to this control's origin
ChangeMousePosition((this.Orientation == OrientationMode.Horizontal)
? X
: Y);
eHoover = new HooverValueEventArgs(CalculateValue(_iMousePosition));
}
else {
ChangeMousePosition(-1);
eHoover = new HooverValueEventArgs(_iMousePosition);
}
// Paint directly by calling the OnPaint() method. This way the background is not
// hosed by the call to Invalidate() so paining occurs without the hint of a flicker
PaintEventArgs e = null;
try {
e = new PaintEventArgs(this.CreateGraphics(), this.ClientRectangle);
OnPaint(e);
}
finally {
e.Graphics.Dispose();
}
OnHooverValue(eHoover);
}
if ((m.Msg == (int) Msg.WM_MOUSELEAVE) ||
(m.Msg == (int) Msg.WM_NCMOUSELEAVE)) {
_bDrawLine = false;
PaintEventArgs paintArgs = null;
try {
paintArgs = new PaintEventArgs(this.CreateGraphics(), this.ClientRectangle);
this.OnPaint(paintArgs);
}
finally {
paintArgs.Graphics.Dispose();
}
}
return false; // Whether or not the message is filtered
}
public bool PreFilterMessage(ref Message m)
{
if (!this._bMouseTrackingOn)
{
return(false);
}
if (m.Msg == (int)Msg.WM_MOUSEMOVE)
{
int X = 0;
int Y = 0;
// The mouse coordinate are measured in screen coordinates because thats what
// Control.MousePosition returns. The Message,LParam value is not used because
// it returns the mouse position relative to the control the mouse is over.
// Chalk and cheese.
Point pointScreen = Control.MousePosition;
// Get the origin of this control in screen coordinates so that later we can
// compare it against the mouse point to determine it we've hit this control.
Point pointClientOrigin = new Point(X, Y);
pointClientOrigin = PointToScreen(pointClientOrigin);
_bDrawLine = false;
_bInControl = false;
HooverValueEventArgs eHoover = null;
// Work out whether the mouse is within the Y-axis bounds of a vertical ruler or
// within the X-axis bounds of a horizontal ruler
if (this.Orientation == OrientationMode.Horizontal)
{
_bDrawLine = (pointScreen.X >= pointClientOrigin.X) &&
(pointScreen.X <= pointClientOrigin.X + this.Width);
}
else
{
_bDrawLine = (pointScreen.Y >= pointClientOrigin.Y) &&
(pointScreen.Y <= pointClientOrigin.Y + this.Height);
}
// If the mouse is in valid position...
if (_bDrawLine)
{
// ...workout the position of the mouse relative to the
X = pointScreen.X - pointClientOrigin.X;
Y = pointScreen.Y - pointClientOrigin.Y;
// Determine whether the mouse is within the bounds of the control itself
_bInControl = (this.ClientRectangle.Contains(new Point(X, Y)));
// Make the relative mouse position available in pixel relative to this control's origin
ChangeMousePosition((this.Orientation == OrientationMode.Horizontal)
? X
: Y);
eHoover = new HooverValueEventArgs(CalculateValue(_iMousePosition));
}
else
{
ChangeMousePosition(-1);
eHoover = new HooverValueEventArgs(_iMousePosition);
}
// Paint directly by calling the OnPaint() method. This way the background is not
// hosed by the call to Invalidate() so paining occurs without the hint of a flicker
PaintEventArgs e = null;
try {
e = new PaintEventArgs(this.CreateGraphics(), this.ClientRectangle);
OnPaint(e);
}
finally {
e.Graphics.Dispose();
}
OnHooverValue(eHoover);
}
if ((m.Msg == (int)Msg.WM_MOUSELEAVE) ||
(m.Msg == (int)Msg.WM_NCMOUSELEAVE))
{
_bDrawLine = false;
PaintEventArgs paintArgs = null;
try {
paintArgs = new PaintEventArgs(this.CreateGraphics(), this.ClientRectangle);
this.OnPaint(paintArgs);
}
finally {
paintArgs.Graphics.Dispose();
}
}
return(false); // Whether or not the message is filtered
}
internal void OnHooverValue(HooverValueEventArgs e)
{
if (HooverValue != null) HooverValue(this, e);
}
public bool PreFilterMessage(ref Message m)
{
if (!this._bMouseTrackingOn)
{
return(false);
}
if (m.Msg == (int)Msg.WM_MOUSEMOVE)
{
int X = 0;
int Y = 0;
Point pointScreen = Control.MousePosition;
Point pointClientOrigin = new Point(X, Y);
pointClientOrigin = PointToScreen(pointClientOrigin);
_bDrawLine = false;
_bInControl = false;
HooverValueEventArgs eHoover = null;
if (this.Orientation == enumOrientation.orHorizontal)
{
_bDrawLine = (pointScreen.X >= pointClientOrigin.X) && (pointScreen.X <= pointClientOrigin.X + this.Width);
}
else
{
_bDrawLine = (pointScreen.Y >= pointClientOrigin.Y) && (pointScreen.Y <= pointClientOrigin.Y + this.Height);
}
if (_bDrawLine)
{
X = pointScreen.X - pointClientOrigin.X;
Y = pointScreen.Y - pointClientOrigin.Y;
_bInControl = (this.ClientRectangle.Contains(new Point(X, Y)));
ChangeMousePosition((this.Orientation == enumOrientation.orHorizontal) ? X : Y);
eHoover = new HooverValueEventArgs(CalculateValue(_iMousePosition));
}
else
{
ChangeMousePosition(-1);
eHoover = new HooverValueEventArgs(_iMousePosition);
}
PaintEventArgs e = null;
try
{
e = new PaintEventArgs(this.CreateGraphics(), this.ClientRectangle);
OnPaint(e);
}
finally
{
e.Graphics.Dispose();
}
OnHooverValue(eHoover);
}
if ((m.Msg == (int)Msg.WM_MOUSELEAVE) ||
(m.Msg == (int)Msg.WM_NCMOUSELEAVE))
{
_bDrawLine = false;
PaintEventArgs paintArgs = null;
try
{
paintArgs = new PaintEventArgs(this.CreateGraphics(), this.ClientRectangle);
this.OnPaint(paintArgs);
}
finally
{
paintArgs.Graphics.Dispose();
}
}
return(false);
}
