How to use DebugView for identifying code mistakes?

Hello,
I am wanting to identify the mistakes of my written code using DebugView but I have No Knowledge about Bug Fixing of Windows or similar problems.
So where can I find a tutorial in which the process of Debugging a Program is shown properly?
Thanks

See this post:
http://www.forexfactory.com/showthread.php?t=245303

The IDE for the new version of MT4 has a debugger.

Arav,

Sent you a PM.

In case someone else cares, here is a post I wrote in another forum a while ago.

DebugView download link for the version I use:https://anonfiles.com/file/a3e558f05...2773c2555c7f1b

One thing to add, the key (according to me) in using DebugView is to combine all debug data you want to see into a multi-line string and use that string in the log() function. Also, create separate log strings e.g. sLog_Init, sLog_Start, sLog_CheckBuySignals, sLog_CheckSellSignals that you then populate with the relevant debug data for each section. Then you combine all the individual log strings into one string at the end of start() and then use log() function with that combined string.

Start of original post:

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]Debugging [/highlight]MQL4[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif] using DebugView[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]This was brought to my attention by a thread by 7bit at the FF forum[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]Original thread: [/highlight]http://www.forexfactory.com/showthread.php?t=245303

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]Download link for DebugView:[/highlight]
http://technet.microsoft.com/en-gb/s.../bb896647.aspx

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]As far as setting up DebugView, once it is running, the only thing I needed to do was to go to the menu item called "Computer" and click "Connect Local". To toggle receiving messages, click the Windows icon on the toolbar or use shortcut CTRL+W.[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]How to use DebugView (general): [/highlight]http://www.sophos.com/en-us/support/...se/119577.aspx
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]Also has link to download. DebugView does not require an installation.[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]How I use the log() function to generate [/highlight]debug[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif] statements in DebugView:[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]In the top section of your code, add this:[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]#import "Kernel32.dll"[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]void OutputDebugStringA(string msg); //used in log()[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]#import[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]Add the following function, e.g. at the end of your code:[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]/////////////////////////////////////////////////////////////////////////////////////////[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]/**[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* Replacement for the built-in Print(), output to the [/highlight]debug[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif] monitor.[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* Send information to OutputDebugString() to be viewed and logged[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* by SysInternals DebugView (free download from microsoft)[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* This is ideal for debugging as an alternative to Print().[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* The function will take up to 8 string (or numeric) arguments[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* to be concatenated into one [/highlight]debug[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif] message.[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]//ALL CREDIT TO 7bit @ ForexFactory[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]//Original thread: [/highlight]http://www.forexfactory.com/showthread.php?t=245303
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]*/[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]void log([/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s1,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s2 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s3 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s4 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s5 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s6 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s7 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s8 = ""[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]) {[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string out = StringTrimRight(StringConcatenate([/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]WindowExpertName(), ".mq4 ", Symbol(),[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s1,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s2,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s3,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s4,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s5,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s6,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s7,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s8[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]));[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]OutputDebugStringA(out);[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]}[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]/////////////////////////////////////////////////////////////////////////////////////////[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]Sample code:[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]//================================START OF [/highlight]code[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif] SAMPLE============================================ ============[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]#import "Kernel32.dll"[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]void OutputDebugStringA(string msg); //used in log()[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]#import[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]extern bool SendLogToDebugView = TRUE; //Need to be able to switch it on and off when running [/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]extern int SecBetwSendingLog = 5; //number of seconds to pause between sending log statements to DebugView[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string sNL = " \n"; //new line[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string sLogComment; //used for debugging using DebugView[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]init(){[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]return(0);[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]}[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]deinit(){[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]return(0);[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]}[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]start(){[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string sTest;[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]int iTest;[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]double dTest;[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]sTest = "Sending [/highlight]debug[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif] data to DebugView";[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]iTest = 1;[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]double dTest = 1.2345;[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]if(SendLogToDebugView){[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]sLogComment = sLogComment + sNL + "START - start() function-----------------------------";[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]sLogComment = sLogComment + sNL + " sTest=" + sTest;[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]sLogComment = sLogComment + sNL + " iTest=" + iTest;[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]sLogComment = sLogComment + sNL + " dTest=" + DoubleToStr(dTest,5);[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]sLogComment = sLogComment + sNL + "END - start() function--------------------------------";[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]log(sLogComment);[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]sLogComment = "";[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]Sleep(SecBetwSendingLog * 1000);[/highlight]


[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]}//end if(SendLogToDebugView){[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]return(0);[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]}[/highlight]

[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]/////////////////////////////////////////////////////////////////////////////////////////[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]/**[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* Replacement for the built-in Print(), output to the [/highlight]debug[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif] monitor.[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* Send information to OutputDebugString() to be viewed and logged[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* by SysInternals DebugView (free download from microsoft)[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* This is ideal for debugging as an alternative to Print().[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* The function will take up to 8 string (or numeric) arguments[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* to be concatenated into one [/highlight]debug[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif] message.[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* ALL CREDIT TO 7bit @ ForexFactory[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]* Original thread: [/highlight]http://www.forexfactory.com/showthread.php?t=245303
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]*/[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]void log([/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s1,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s2 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s3 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s4 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s5 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s6 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s7 = "",[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string s8 = ""[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]) {[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]string out = StringTrimRight(StringConcatenate([/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]WindowExpertName(), ".mq4 ", Symbol(),[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s1,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s2,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s3,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s4,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s5,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s6,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s7,[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]" ", s8[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]));[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]OutputDebugStringA(out);[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]}[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]/////////////////////////////////////////////////////////////////////////////////////////[/highlight]
[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif]//================================END OF [/highlight]code[highlight=rgb(245, 245, 255); font-family:verdana,arial,tahoma,calibri,geneva,sans-serif] SAMPLE============================================ ============[/highlight]