controls : How do I disable the chart scroll?
FinGeR:
https://www.mql5.com/en/docs/standardlibrary/controls/cscrollh
If I the scrollbar(CScrollH) with the mouse move, move the chart. How do I disable the chart scroll?
Finger, sorry, can you show your scroll code, so I don't have to build it from scratch, I kinda lazy today.
I guess we have to use OnChartEvent's CHARTEVENT_OBJECT_DRAG, but then what to do next ?, Funny MQ does not provide example for this :(
Finger, sorry, can you show your scroll code, so I don't have to build it from scratch, I kinda lazy today.
2 files PanelDialog.mqh and PanelIndicator.mq5
//+------------------------------------------------------------------+ //| PanelDialog.mqh | //| Copyright 2011, MetaQuotes Software Corp. | //| http://www.mql5.com | //+------------------------------------------------------------------+ #include <Controls\Dialog.mqh> #include <Controls\Panel.mqh> #include <Controls\Edit.mqh> #include <Controls\Label.mqh> #include <Controls\SpinEdit.mqh> #include <Controls\Scrolls.mqh> //+------------------------------------------------------------------+ //| defines | //+------------------------------------------------------------------+ //--- indents and spacing #define INDENT_LEFT (11) // left indent (including the border width) #define INDENT_TOP (11) // top indent (including the border width) #define INDENT_RIGHT (11) // right indent (including the border width) #define INDENT_BOTTOM (11) // bottom indent (including the border width) #define CONTROLS_GAP_X (10) // spacing along the X-axis #define CONTROLS_GAP_Y (10) // spacing along the Y-axis //--- for labels #define LABEL_WIDTH (50) // size along the X-axis //--- for edits #define EDIT_WIDTH (50) // size along the X-axis #define EDIT_HEIGHT (20) // size along the Y-axis //--- for base colors (RGB) #define BASE_COLOR_MIN (0) // minimum value of the color component #define BASE_COLOR_MAX (255) // maximum value of the color component //+------------------------------------------------------------------+ //| CPanelDialog class | //| Function: main application dialog | //+------------------------------------------------------------------+ class CPanelDialog : public CAppDialog { private: //--- additional controls CScrollH m_scrollh; // object for display scroll CPanel m_color; // object for displaying color CLabel m_label_red; // "red" level caption object CEdit m_field_red; // "red" value display object CLabel m_label_green; // "green" level caption object CEdit m_field_green; // "green" value display object CLabel m_label_blue; // "blue" level caption object CSpinEdit m_edit_blue; // "blue" value control object //--- parameter values int m_red; // "red" value int m_green; // "green" value int m_blue; // "blue" value public: CPanelDialog(void); ~CPanelDialog(void); //--- creation virtual bool Create(const long chart,const string name,const int subwin,const int x1,const int y1,const int x2,const int y2); //--- chart event handler virtual bool OnEvent(const int id,const long &lparam,const double &dparam,const string &sparam); //--- properties void SetRed(const int value); void SetGreen(const int value); void SetBlue(const int value); protected: //--- creating additional controls bool CreateScrollH(void); bool CreateColor(void); bool CreateRed(void); bool CreateGreen(void); bool CreateBlue(void); //--- internal event handlers virtual bool OnResize(void); //--- event handlers for additional controls void OnChangeBlue(void); //--- methods void SetColor(void); }; //+------------------------------------------------------------------+ //| Event handling | //+------------------------------------------------------------------+ EVENT_MAP_BEGIN(CPanelDialog) ON_EVENT(ON_CHANGE,m_edit_blue,OnChangeBlue) EVENT_MAP_END(CAppDialog) //+------------------------------------------------------------------+ //| Constructor | //+------------------------------------------------------------------+ CPanelDialog::CPanelDialog(void) : m_red((BASE_COLOR_MAX-BASE_COLOR_MIN)/2), m_green((BASE_COLOR_MAX-BASE_COLOR_MIN)/2), m_blue((BASE_COLOR_MAX-BASE_COLOR_MIN)/2) { } //+------------------------------------------------------------------+ //| Destructor | //+------------------------------------------------------------------+ CPanelDialog::~CPanelDialog(void) { } //+------------------------------------------------------------------+ //| Creation | //+------------------------------------------------------------------+ bool CPanelDialog::Create(const long chart,const string name,const int subwin,const int x1,const int y1,const int x2,const int y2) { //--- calling the parent class method if(!CAppDialog::Create(chart,name,subwin,x1,y1,x2,y2)) return(false); //--- creating additional controls //if(!CreateColor()) return(false); //if(!CreateRed()) return(false); //if(!CreateGreen()) return(false); if(!CreateScrollH()) return(false); //--- setting the panel color SetColor(); //--- success return(true); } //+------------------------------------------------------------------+ //| Color panel creation | //+------------------------------------------------------------------+ bool CPanelDialog::CreateColor(void) { //--- coordinates int x1=INDENT_LEFT+LABEL_WIDTH+CONTROLS_GAP_X+EDIT_WIDTH+CONTROLS_GAP_X; int y1=INDENT_TOP; int x2=ClientAreaWidth()-INDENT_RIGHT; int y2=ClientAreaHeight()-INDENT_BOTTOM; //--- creating if(!m_color.Create(m_chart_id,m_name+"Color",m_subwin,x1,y1,x2,y2)) return(false); if(!m_color.ColorBorder(CONTROLS_EDIT_COLOR_BORDER)) return(false); if(!Add(m_color)) return(false); //--- success return(true); } //+------------------------------------------------------------------+ //| Creating the display element "Red" with explanatory caption | //+------------------------------------------------------------------+ bool CPanelDialog::CreateRed(void) { //--- coordinates int x1=INDENT_LEFT; int y1=INDENT_TOP; int x2=x1+EDIT_WIDTH; int y2=y1+EDIT_HEIGHT; //--- creating the caption if(!m_label_red.Create(m_chart_id,m_name+"LabelRed",m_subwin,x1,y1+1,x2,y2)) return(false); if(!m_label_red.Text("Red")) return(false); if(!Add(m_label_red)) return(false); //--- adjusting the coordinates x1+=LABEL_WIDTH+CONTROLS_GAP_X; x2=x1+EDIT_WIDTH; //--- creating the display element if(!m_field_red.Create(m_chart_id,m_name+"Red",m_subwin,x1,y1,x2,y2)) return(false); if(!m_field_red.Text(IntegerToString(m_red))) return(false); if(!m_field_red.ReadOnly(true)) return(false); if(!Add(m_field_red)) return(false); //--- success return(true); } //+------------------------------------------------------------------+ //| Creating the display element "Green" with explanatory caption | //+------------------------------------------------------------------+ bool CPanelDialog::CreateGreen(void) { //--- coordinates int x1=INDENT_LEFT; int y1=INDENT_TOP+(EDIT_HEIGHT+CONTROLS_GAP_Y); int x2=x1+EDIT_WIDTH; int y2=y1+EDIT_HEIGHT; //--- creating the caption if(!m_label_green.Create(m_chart_id,m_name+"LabelGreen",m_subwin,x1,y1+1,x2,y2)) return(false); if(!m_label_green.Text("Green")) return(false); if(!Add(m_label_green)) return(false); //--- adjusting the coordinates x1+=LABEL_WIDTH+CONTROLS_GAP_X; x2=x1+EDIT_WIDTH; //--- creating the display element if(!m_field_green.Create(m_chart_id,m_name+"Green",m_subwin,x1,y1,x2,y2)) return(false); if(!m_field_green.Text(IntegerToString(m_green))) return(false); if(!m_field_green.ReadOnly(true)) return(false); if(!Add(m_field_green)) return(false); //--- success return(true); } //+------------------------------------------------------------------+ //| Creating the control "Blue" with explanatory caption | //+------------------------------------------------------------------+ bool CPanelDialog::CreateBlue(void) { //--- coordinates int x1=INDENT_LEFT; int y1=INDENT_TOP+2*(EDIT_HEIGHT+CONTROLS_GAP_Y); int x2=x1+EDIT_WIDTH; int y2=y1+EDIT_HEIGHT; //--- creating the caption if(!m_label_blue.Create(m_chart_id,m_name+"LabelBlue",m_subwin,x1,y1+1,x2,y2)) return(false); if(!m_label_blue.Text("Blue")) return(false); if(!Add(m_label_blue)) return(false); //--- adjusting the coordinates x1+=LABEL_WIDTH+CONTROLS_GAP_X; x2=x1+EDIT_WIDTH; //--- creating the display element if(!m_edit_blue.Create(m_chart_id,m_name+"Blue",m_subwin,x1,y1,x2,y2)) return(false); if(!Add(m_edit_blue)) return(false); m_edit_blue.MinValue(BASE_COLOR_MIN); m_edit_blue.MaxValue(BASE_COLOR_MAX); m_edit_blue.Value(m_blue); //--- success return(true); } //+------------------------------------------------------------------+ //| Creating the control "ScrollV" | //+------------------------------------------------------------------+ bool CPanelDialog::CreateScrollH(void) { //--- coordinates int x1=INDENT_LEFT; int y1=INDENT_TOP+2*(EDIT_HEIGHT+CONTROLS_GAP_Y); int x2=x1+EDIT_WIDTH; int y2=y1+EDIT_HEIGHT; //--- creating the caption if(!m_scrollh.Create(m_chart_id,m_name+"ScrollV",m_subwin,x1,y1+1,x2,y2)) return(false); m_scrollh.Width(100); m_scrollh.MinPos(1); m_scrollh.MaxPos(20); if(!Add(m_scrollh)) return(false); //--- success return(true); } //+------------------------------------------------------------------+ //| Setting the "Red" value | //+------------------------------------------------------------------+ void CPanelDialog::SetRed(const int value) { //--- checking if(value<0 || value>255) return; //--- saving m_red=value; //--- setting m_field_red.Text(IntegerToString(value)); //--- setting the panel color SetColor(); } //+------------------------------------------------------------------+ //| Setting the "Green" value | //+------------------------------------------------------------------+ void CPanelDialog::SetGreen(const int value) { //--- checking if(value<0 || value>255) return; //--- saving m_green=value; //--- setting m_field_green.Text(IntegerToString(value)); //--- setting the panel color SetColor(); } //+------------------------------------------------------------------+ //| Setting the "Blue" value | //+------------------------------------------------------------------+ void CPanelDialog::SetBlue(const int value) { //--- checking if(value<0 || value>255) return; //--- saving m_blue=value; //--- setting m_edit_blue.Value(value); //--- setting the panel color SetColor(); } //+------------------------------------------------------------------+ //| Resize handler | //+------------------------------------------------------------------+ bool CPanelDialog::OnResize(void) { //--- calling the parent class method if(!CAppDialog::OnResize()) return(false); //--- changing the color panel width m_color.Width(ClientAreaWidth()-(INDENT_RIGHT+LABEL_WIDTH+CONTROLS_GAP_X+EDIT_WIDTH+CONTROLS_GAP_X+INDENT_LEFT)); //--- success return(true); } //+------------------------------------------------------------------+ //| Handler of the event of changing the "blue" level | //+------------------------------------------------------------------+ void CPanelDialog::OnChangeBlue(void) { //--- saving m_blue=m_edit_blue.Value(); //--- setting the panel color SetColor(); } //+------------------------------------------------------------------+ //| Setting the panel color | //+------------------------------------------------------------------+ void CPanelDialog::SetColor(void) { m_color.ColorBackground(m_red+(m_green<<8)+(m_blue<<16)); } //+------------------------------------------------------------------+
//+------------------------------------------------------------------+ //| PanelIndicator.mq5 | //| Copyright 2011, MetaQuotes Software Corp. | //| http://www.mql5.com | //+------------------------------------------------------------------+ #property copyright "Copyright 2011, MetaQuotes Software Corp." #property link "http://www.mql5.com" #property version "1.00" #property indicator_separate_window #property indicator_plots 0 #property indicator_buffers 0 #property indicator_minimum 0.0 #property indicator_maximum 0.0 //+------------------------------------------------------------------+ //| Include files | //+------------------------------------------------------------------+ #include "PanelDialog.mqh" //+------------------------------------------------------------------+ //| Global variables | //+------------------------------------------------------------------+ CPanelDialog ExtDialog; //+------------------------------------------------------------------+ //| Initialization | //+------------------------------------------------------------------+ int OnInit() { //--- creating the application dialog if(!ExtDialog.Create(0,"Panel Indicator",0,0,0,0,130)) return(-1); //--- starting the application if(!ExtDialog.Run()) return(-2); //--- creating the timer EventSetTimer(1); //--- success return(0); } //+------------------------------------------------------------------+ //| Deinitialization | //+------------------------------------------------------------------+ void OnDeinit(const int reason) { //--- destroying the dialog ExtDialog.Destroy(); //--- killing the timer EventKillTimer(); } //+------------------------------------------------------------------+ //| Iteration | //+------------------------------------------------------------------+ int OnCalculate(const int rates_total, const int prev_calculated, const int begin, const double &price[]) { //--- changing the dialog property ExtDialog.SetRed(MathRand()%256); //--- returning the prev_calculated value for the next call return(rates_total); } //+------------------------------------------------------------------+ //| Timer event handler | //+------------------------------------------------------------------+ void OnTimer() { //--- changing the dialog property ExtDialog.SetGreen(MathRand()%256); } //+------------------------------------------------------------------+ //| Chart event handler | //+------------------------------------------------------------------+ void OnChartEvent(const int id, const long &lparam, const double &dparam, const string &sparam) { //--- handling the event ExtDialog.ChartEvent(id,lparam,dparam,sparam); } //+------------------------------------------------------------------+
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https://www.mql5.com/en/docs/standardlibrary/controls/cscrollh
If I the scrollbar(CScrollH) with the mouse move, move the chart. How do I disable the chart scroll?