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Help: Inhibit Ninja Default Mouse action while capturing clicks
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Help: Inhibit Ninja Default Mouse action while capturing clicks

  #1 (permalink)
Elite Member
Zelienople, PA, USA
Futures Experience: Beginner
Platform: NinjaTrader
Favorite Futures: Futures
Posts: 1 since May 2015
Thanks: 1 given, 0 received

Help: Inhibit Ninja Default Mouse action while capturing clicks

I have been able to capture mouse movement and mouse clicks in Ninja Script. Portions of code (apprx 3,000 lines) are shown below. I can intercept the mouse clicks and read the keyboard state to decide how to process the click. The problem is that after intercepting the mouse click, I get the Ninja Trader "mouse action".

The question is: When I decide I want to capture a mouse click, how do I inhibit that mouse click from causing the default ninja trader actions? Alternatively, is there a way to disable the default mouse actions for some period of time, then re-enable them later (i.e. User clicks on a button. Disable all Ninja default mouse actions. Pick points on the chart and record them. Re-enable Ninja default mouse actions).

I am a beginner at this sort of thing, and would appreciate your help.

Thank you! Have a GREAT day!


Code for start up:

// --- mcdOnStartUp() --- Add to end of "OnStartUp()"
private void mcdOnStartUp()
if ( bDebug ) Print("mcdOnStartUp()");
bUpdated = false;
if ( (bInstalled = bIsBSModeActive()) == false ) {
// Print("mcdOnStartUp() - not active...");

//add the mouse events
// Print("mcdOnStartUp()");
this.ChartControl.ChartPanel.MouseMove += new MouseEventHandler(mcdMouseEvent);
this.ChartControl.ChartPanel.MouseClick += new MouseEventHandler(mcdMouseEvent);


Code for event handling:

private void mcdMouseEvent(object sender, MouseEventArgs e)
TriggerCustomEvent(new CustomEvent(mcdMouseTriggerEvent),e );
catch (Exception ex)
Print("Error1 " + ex.ToString());

private void mcdMouseTriggerEvent(object state)
int loc = 0;
int idx = -3;
int barclick = 0;
bool bDbg = false;

if ( !bUpdated )

if ( curPt == null ) {
curPt = new chartPoint(this);
MouseEventArgs m = (MouseEventArgs)state;
loc = 1;
int bShift = 0, bAlt = 0, bCntrl = 0, bLeft = 0, bRight = 0;
bool bProcessed = false;
// Save points in case they changed
double tptShift0 = ptShift0;
double tptShift1 = ptShift1;
double tptAlt0 = ptAlt0;
double tptAlt1 = ptAlt1;
double tptCntrl0 = ptCntrl0;
double tptCntrl1 = ptCntrl1;
if ( m != null ) {
MouseButtons MBLeft = MouseButtons.Left;
MouseButtons MBRight = MouseButtons.Right;
bShift = (Control.ModifierKeys & Keys.Shift) != 0? 1:0;
bAlt = (Control.ModifierKeys & Keys.Alt) != 0? 2:0;
bCntrl = (Control.ModifierKeys & (Keys.ControlKey | Keys.Control)) != 0? 4:0;
if ( (bShift | bAlt | bCntrl) != 0 && (m.Button & (MBLeft | MBRight)) == (MBLeft | MBRight) ) {
// Both right and left button pressed, clear the oints
if ( bShift != 0 ) { ptShift0 = ptShift1 = 0; if ( bDbg ) Print(" pt Shift reset"); }
if ( bAlt != 0 ) { ptAlt0 = ptAlt1 = 0; if ( bDbg ) Print(" pt Alt reset"); }
if ( bCntrl != 0 ) { ptCntrl0 = ptCntrl1 = 0; if ( bDbg ) Print(" pt Cntrl reset"); }
} else if ( (bShift | bAlt | bCntrl) != 0 &&
(m.Button & (MBLeft | MBRight)) != 0 ) {
// set a point
// Set the Y-position
double y = curPt.rYposTick;
if ( (m.Button & MBLeft) != 0 ) {
if ( bShift != 0 ) { ptShift0 = y; if ( bDbg ) Print(" pt Shift 0 set to: "+y.ToString("0.0000")); }
if ( bAlt != 0 ) { ptAlt0 = y; if ( bDbg ) Print(" pt Alt 0 set to: "+y.ToString("0.0000")); }
if ( bCntrl != 0 ) { ptCntrl0 = y; if ( bDbg ) Print(" pt Cntrl 0 set to: "+y.ToString("0.0000")); }
if ( (m.Button & MBRight) != 0 ) {
if ( bShift != 0 ) { ptShift1 = y; if ( bDbg ) Print(" pt Shift 1 set to: "+y.ToString("0.0000")); }
if ( bAlt != 0 ) { ptAlt1 = y; if ( bDbg ) Print(" pt Alt 1 set to: "+y.ToString("0.0000")); }
if ( bCntrl != 0 ) { ptCntrl1 = y; if ( bDbg ) Print(" pt Cntrl 1 set to: "+y.ToString("0.0000")); }
// Print("Shift="+(bShift==0?"up":"down")+" Alt="+(bAlt==0?"up":"down")+" Cntrl="+(bCntrl==0?"up":"down"));
// Print("Set point to "+y.ToString("0.0000"));
bProcessed = true;
// this.printChartControl(this);
// Check for one of the points changed position
if ( tptShift0 != ptShift0 || tptShift1 != ptShift1 ||
tptAlt0 != ptAlt0 || tptAlt1 != ptAlt1 ||
tptCntrl0 != ptCntrl0 || tptCntrl1 != ptCntrl1 ) {
// Force re-serialization of the data
barEntrySerialData.serializeClass( getInstrument(this), this );
catch (Exception ex)
Print("Error loc="+loc.ToString()+" computing projection bar: "+ex.ToString());

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  #3 (permalink)
Market Wizard
Birmingham UK
Futures Experience: Intermediate
Platform: NinjaTrader
Broker/Data: IG/eSignal
Favorite Futures: Dax
ratfink's Avatar
Posts: 3,544 since Dec 2012
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    HandledMouseEventArgs ee = (HandledMouseEventArgs) e;

    ee.Handled = true;

Sometimes Windows/NT gets a strop on about this sort of thing but it's often good on Tuesdays, except when it decides to bar it or ignore it completely, so don't expect it to work 100%, I have used it but don't rely on it.

Be aware to treat moves, down clicks, up clicks, wheel moves separately as required (I prefer separate handler routines), also for the keyboard not all keys give you up and down, e.g. arrow keys you just get the up and no auto repeat, whereas the control/alt/shift keys you get up and down with auto-repeat..

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