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Pointer

Posted on 2002-05-28
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Last Modified: 2010-04-02
I handling WM_KEYDOWN messege. I have char *in_text. When
I typing something I want in_text to expand.

P.S. I bought book but I didn't recived it yet. So, I don't know much about pointers but I want my program working today.

Sorry for my English.
Tnx.
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Question by:rv_man
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2 Comments
 
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Expert Comment

by:srithi
ID: 7041157
why an array ? take CString object instead.
its easy with this object than with an array;
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MDarling earned 50 total points
ID: 7041250
WM_KEYDOWN is probably not the place to do this.

what about WM_CHAR?

as srithi said - easier to use a CString unless you aren't using MFC of course.

if you arent then...

either make in_text point to a buffer big enough for your needs

char in_text[1000] or something.

or do something like the following...

assumes in_text is dynamically allocated

char* tmp = new char[strlen(in_text)+2];

strcpy(tmp,in_text);
tmp[strlen(in_text)]=c; // where c is the new char
tmp[strlen(in_text)+1]=0; // null terminate

// delete old in_text string
delete [] in_text;

// make in_text same as tmp
in_text=tmp;

note - this isn't exactly efficent.

Regards,
Mike.


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