Error: Out-of-bounds pointer argument (before start of array).

[Wim S]

Hello,

I'm having a weird problem:

In a function, I declare a string "char label_str[20]".

Later in this function, I want to use this string to hold the label of a picture control. So I use the function

GetCtrlAttribute (my_panel, my_picture_control, ATTR_LABEL_TEXT, label_str);

When the debugger executes this function, I get a FATAL RUN_TIME ERROR: Out-of-bounds pointer argument (before start of array).

Labwindows is indicating 'label_str' in the GetCtrlAttribute function (marked in blue).

I really have no idea what's causing this error.

so all hints and tips are really welcome...

Message Edited by Wim S on 01-06-2006 12:21 PM

[Graziano]

Hi!

   I think defining your string as
   
   char *label_str;

    label_str=malloc(20*sizeof(char));

   etc....

   should solve.


  I've also found this, in CVI help:

Constant:  ATTR_LABEL_TEXT
Data Type:  string (char *)
Description:  The text label for the control.
   
Control Types:  All except Text Message, Decoration, Splitter

In the description of ATTRIBUTE VALUE for GetCtrlAttribute() function.

Let me know how you managed this problem!!!!

graziano

[Wim S]

Hi Graziano,

Thanks a lot. Your solution seems to work.

[Graziano]

Hi!
   Thanks for feeding me back!

graziano