Problem w/ PtGetResource for PtNumericInteger

QNX DEVELOPERS GUI Programming
1

Hello,

I have two PtNumericInteger widgets on my GUI. When widget 1 is changed, I want widget 2 to be loaded with the same value. The problem is that widget 2 (range ± 2147483648) is always loaded with a really large value = 134626656, instead of the value of widget 1 (with value range 1 to 6). When I load a fixed value into widget 2 it works, so I’m assuming that I am not using PtGetResource() properly.

Please help. Thanks.

int EdtWidget1_onChange(PtWidget_t*widget, ApInfo_t *apinfo, PtCallbackInfo_t *coinfo)
{
int iTemp1, iTemp2;

PtGetResource(ABW_EDT_WIDGET1, Pt_ARG_NUMERIC_VALUE, &iTemp1,0);

iTemp2 = iTemp1;

PtSetResource(ABW_EDIT_WIDGET2, Pt_ARG_NUMERIC_VALUE,iTemp2,0);

return(Pt_Continue);
}

2

Carefully read the documentation on PtGetResource. If you can’t find what’s wrong, read it again ;-) If you still can find it, post again.

3

I would like to give some hint cuz I know it can be frustrating when you are reading the documentation.
PtGetResource can only be used with pointer, the third argument must be a pointer type.

4

jinma, you made it way too easy now ;-))) In the PtGetResource doc, there is a big yellow icon and the text beside it says “Because PtGetResource() returns a pointer”.

Also the page says “This macro sets a pointer to a resource value within the specified widget”.

Then value:
The address of a pointer …

I mean how much clearer can it get ;-)

Jinma, I answer lots of question around here, and it’s just recently that I realize that in order to really help people you have to help them be autonomous, to create some skills at finding information that is in some cases is really obvious.

  • Mario
5

sorry~ I know… but it seemed like “foozy man” was very new to PhAB and I thought he could get a break this time ~
I was once like him too and getting good help from this website made me love QNX.

6

No need to be sorry. I’m just giving my opinion on this, you are free to do what every you want with it.

I’m having a good though for the doc people. I think they are doing a great job. Sometimes yes it’s hard to find specific detail in all the available information. But in some case it’s really obvious, which is why I prefer to point to the documention, a tribute to the doc team at QSS ;-)

  • Cheers
7

Thanks, Mario!

8

Thanks to everyone for their help. In fact, I found an example with PtGetResources() from this website, and gave up on PtGetResource() for awhile after reading mario’s email. Now, I see where I went wrong with PtGetResource(). I AM new to PhAB, and it does get confusing how to retrieve data from different types of widgets.

9

I prefer to use PtGetResource over PtGetResources, unless I have to modify tons of attributes.