[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now


Help parsing an Edit Control

Posted on 2013-06-05
Medium Priority
Last Modified: 2013-06-14
I am simulating a "fingerprint scan" by using an Edit box in my novelty program.

the characters I will use to accept and draw the print are:

/ \ : { } |

Open in new window

here is the key I am using to determine whether or not a fingerprint scan is correct:

{ = day of week is Mon thru thurs
} = say of week is Fri thru sun
/ = month is Jan Thru June
\ = month is July thru Dec
| = time is 12:01am thru 12pm
: = time is 12:01pm thru 12:00am

Can someone show me a Bare bones example on how to check my IDC_PRINT edit box to determine whether they entered a valid"print"?

Thank you.
Question by:edvinson
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
LVL 35

Expert Comment

ID: 39222691
can you elaborate what relation a "fingerprint scan" has with a edit box string that contains date/time related characters?

can you make a sample usecase with good and bad input (and explain why they were good or bad)?


Author Comment

ID: 39224670
The user has to enter the correct characters in the edit box to succeed.
So u need to use the key to determine whether their answer is correct.

I think i would loop through each char in edit box, and determine whether that character evaluates to true (based upon the rule assigned to that character)

if each character is True, then they entered a correct "print", and game continues.

Hope that helps. Oh, of course automatically the function will return false, bad, if any other characters are present.

Thank you so much
LVL 35

Expert Comment

ID: 39224707
a few questions:

- the user enters any sequence of / \ : { } | and all are valid?

- it depends on the current date/time whether they were valid?

- a valid character can be repeated?

generally, you better would check each single character rather than the input in the edit box. the problem for the latter is that you don't get a reliable event for end-of-input but have to handle ambiguous events like WM_KILLFOCUS, what means that the user has moved from edit field to some other control.

when the user enters a single character you could handle EN_CHANGE or EN_UPDATE notification, or on a lower level, WM_KEYDOWN, WM_CHAR, or WM_KEYUP message.

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.


Author Comment

ID: 39232467
I think I confused you, I am sorry.

Quite simply, I want to check the edit box value. It is either going to be correct, or incorrect.

Wrapped in a BOOL function....

 I would loop through each character.

Let's say the first character is { , then my code would check to see if Todays day is MON-THURS. If so, continue with next char. If not, it fails, return false,

Do this for each character. Each character must pass its own test.

The correct answer will contain 3 characters, and depending upon the time and date, it will contain only the characters I listed above.

For instance, using SAT JUN 08 2013 12:02am , a correct answer would be:


anything else would return false.

I suppose the order of the characters doesn't matter, as long as they are correct

Author Comment

ID: 39245421
Question not receiving answers, request deleting please. Maybe i need to re phrase it.
LVL 35

Accepted Solution

sarabande earned 2000 total points
ID: 39246875
you could do like

std::string strValid = "/\\:{}|";
char szInput[100] = { '\0' };
GetWindowText(::GetDlgItem(IDC_PRINT), szInput, 100);
int len = (int)strlen(szInput);
for (int i = 0; i < len; ++i)
     if (strValid.find(szInput[i]) == std::string::npos)
            ::MessageBox(NULL, szInput, "Wrong Input", MB_OK);
     SYSTEMTIME st = { 0 };
     switch (szInput[i])
     case '/':
           if (st.wMonth > 6)
                ::MessageBox(NULL, "/", "Wrong Month", MB_OK);
    case '\\':

Open in new window


Author Closing Comment

ID: 39247233
This is the perfect code solution to get me going.

Featured Post


Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article is the first in a series of articles about the C/C++ Visual Studio Express debugger.  It provides a quick start guide in using the debugger. Part 2 focuses on additional topics in breakpoints.  Lastly, Part 3 focuses on th…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.
Suggested Courses

649 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question