How do I make a test on a text-box if the text are changed or not? 1

[stigejg]

Hello,

I am sitting here programming a simple (to start with) text editor. And now I met the brick wall……

I am using VB 60 Learning edition so the text area in my editor is a text box. Here I want to build in a check if the text-document I have been working with is changed and therefor have to be prompted if I want to save these changes or no when I am quitting or opening a new document (just like the notepad in windows).

So my question is:

Can anyone out there give me a hint of how I can do the test of a document have been changed or not. I have tryed to read and search trough all my documentation an are not able to find out of this.

Tanks Stig

 

[Jon4747]

Hi Stig

In your form module -> general, click your textbox, in declarations, click "change". every time your text changes, this event procedure is called, put whatever code you need there.

Jon

 

[NickISD]

Stig,
Use the Change event on the text control property and set a flag and test the value on exit to see if set to true.

Regards,Nick

 

[stigejg]

Thanks folks,

The easyest part is the change event, the tricky one is how I can check the content in the text box against the stored text-document on a easy way.

One way is to count the lenght of the file while loading it and compare this against the lenght of the same file when i am quiting (but then i don't catch any changes if I have the same number og digits in the changed text).

So I am searching for an simple way of comparing the new (changed) text against the original one.

Some tips of how I can do this an easy way?

Stig

 

[bateman23]

Hi Stig,
I think you don't have to compare the files. Using the change-method is quiet good.
Whenever the user hits a key, enters new text, the file/text is changed - and this method called.
- And i thought that's what you want...

But if you really want to compare the content of two files (you really don't have to do that),
look at this site:

http://www.vbsquare.com/tips/tip358.html

Hope that helped
bateman23

---------------------------------------
Visit me @:

http://www.daniel-purucker.de/

 

[stigejg]

Hello bateman, Thanks the link you gave me was wery helpul.