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| c++ compile issue ImqStr |
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| mqjeff |
 Posted: Thu Apr 13, 2017 7:32 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| balaraju wrote: |
Thanks Jeff.. we tried these options but no luck  May be issue with compiler and code compatibility... |
Which options?
There are 24 choices on that page.
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| balaraju |
| Posted: Tue Apr 18, 2017 2:13 am Post subject: |
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Apprentice
Joined: 06 Feb 2017
Posts: 29
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So we consulted our c++ expert. There is this variable MQLONG and we are appending this with a string, which was giving error unable to find MQLONG. So she assigned this value of MQLONG to a variable which is LONG and this resolved the issue...  |
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| gbaddeley |
| Posted: Tue Apr 18, 2017 4:34 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| balaraju wrote: |
| So we consulted our c++ expert. There is this variable MQLONG and we are appending this with a string, which was giving error unable to find MQLONG. So she assigned this value of MQLONG to a variable which is LONG and this resolved the issue... |
MQLONG is not a variable, it is a data type, a 32 bit signed integer. Obviously this has no relationship to strings. Can you provide a code fragment?
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Glenn |
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| balaraju |
| Posted: Fri Apr 28, 2017 1:04 am Post subject: |
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Apprentice
Joined: 06 Feb 2017
Posts: 29
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sorry for the delay. Below is the snippet
Earlier :
MQLONG A;
MQLONG B;
After casting
long A;
long B; |
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| gbaddeley |
| Posted: Sun Apr 30, 2017 4:41 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| balaraju wrote: |
sorry for the delay. Below is the snippet
Earlier :
MQLONG A;
MQLONG B;
After casting
long A;
long B; |
That's fine, provided the compiler treats 'long' as a 32 bit integer.
AFAIK, all UNIX compilers treat 'long' as 64 bits when compiling a 64 bit app. This may break MQI code that where you are passing values using MQLONG (a strictly 32 bit quantity).
Can you post the code where it is casting? It would be nice to check if this is safe.
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