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URGENT: IDL_STRING variable in calling C from IDL when update from IDL5.4 to 5.6 [message #37019]

Thu, 20 November 2003 23:07

xje4e
Messages: 18
Registered: February 2002

Junior Member

Hi, there,

I am building program that calls C from IDL by DLM. In IDL, the
function passed only one parameter that is a string, such as
'test.txt'. In C, use argv[0]->value.str.s to read the string out.
In IDL 5.4, the program works well.

I updated IDL from 5.4 to 5.6, the program is dead. I debug the
program and found that when I use IDL5.4 to debug, the
argv[0]->value.str.s has the right input: 'test.txt'. However, when I
use IDL5.6 to debug, the argv[0]->value.str.s is NULL.

How can this happen? Is this a bug in IDL5.6 or RSI changed something
about the IDL_string strucure? I test the program in IDL6.0, the same
error happened.

Any help will be appreciated,

Jin

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[Message index]

		URGENT: IDL_STRING variable in calling C from IDL when update from IDL5.4 to 5.6 By: xje4e on Thu, 20 November 2003 23:07
		Re: URGENT: IDL_STRING variable in calling C from IDL when update from IDL5.4 to 5.6 By: David Fanning on Mon, 24 November 2003 12:42
		Re: URGENT: IDL_STRING variable in calling C from IDL when update from IDL5.4 to 5.6 By: xje4e on Mon, 24 November 2003 12:36
		Re: URGENT: IDL_STRING variable in calling C from IDL when update from IDL5.4 to 5.6 By: Nigel Wade on Fri, 21 November 2003 02:13

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