Hi
you r assigning MemPtr (ie handlelock to charptr) so
str1 contains null character so that problem occurs
On Thu, 21 Feb 2002 prasad wrote :
> Hi,
> Here I am getting problem with StrCat(); function
> whenever I am using this Function I am getting the
> Error
> like
> " Null String passed"
> I am sending tha code here please go through.
>
> I am declare the "errBuff" as global variable
> char *errBuff[50];
> static void MainFormInit()
> {
>
> FormPtr frm;
> ListPtr lst;
> UInt numRecords;
> frm=FrmGetActiveForm();
> numRecords=DmNumRecords(DrugDB);
> int recnum = numRecords/40;
> CharPtr tempStr,test;
> char *test1[50];
> int i,j=0,tempInt,xx=0;
> int xx0=1;
> Handle recHandle1;
> CharPtr recText1,str1;
>
> lst=(ListType *)FrmGetObjectPtr(frm,
> FrmGetObjectIndex(frm,MainUnnamed1001List));
>
> for(i=0;i<recnum;i++)
> {
>
> //Retrive information from database
> recHandle1=(char **)DmGetRecord(DrugDB,xx0);
> recText1=(char *)MemHandleLock(recHandle1);
> str1=recText1;
> MemHandleUnlock(recHandle1);
> DmReleaseRecord(DrugDB,xx0, false);
>
> items1[j]=str1;
> StrCopy(errBuff[j],", ");
> StrCat(errBuff[j],str1);
> ErrDisplay(errBuff[j]);
> j=j+1;
> xx0=xx0+40;
> }
> LstSetListChoices(lst,errBuff,recnum);
> LstDrawList(lst);
> }
>
> any one have idea please tell me.
>
>
> -------
>
>
> ________________________________________________________-
> _____
> Get Your Free ScanMail and Email At
> http://www.bharatmail.com
>
> --
> For information on using the Palm Developer Forums, or
> to unsubscribe, please see http://www.palmos.com/dev/tec-
> h/support/forums/
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/tech/support/forums/
