The pointer is where your problem lies. How did you save the name in your structure? Where do you think that pointer is pointing to after your try to read that record back?
K -----Original Message----- From: christy [mailto:[EMAIL PROTECTED]] Sent: Wednesday, December 04, 2002 2:29 PM To: Palm Developer Forum Subject: "unallocated chunk of memory" error when call "WinDrawChars" I am drawing a list from the database. My app stops with "unallocated chunk of memory" error on the following "WinDrawChars" statement: static void MainFormListDrawItem(Int16 itemNum, RectangleType *bounds, Char **unused) { MemHandle recHandle; FDBRecordType *recF; /******* itemnum is always 0 here. Is this where the problem is? ***********/ recHandle = DmQueryRecord(gF, itemNum); recF = MemHandleLock(recHandle); /****** this line doesn't work. ********/ WinDrawChars(recF->fname,StrLen(recF->fname), bounds->topLeft.x, bounds->topLeft.y); MemHandleUnlock(recHandle); } Here is the Stucture for the database record: typedef struct { UInt16 fid; char *fname; }FDBRecordType; Here is my init function (this function works) static void MainFormInit(FormPtr /*frmP*/){ FormPtr frm; ListPtr lst; UInt16 numRecords; /* get a pointer to the main form */ frm = FrmGetActiveForm(); /* get the number of records in the database */ /* it retuns me 100 recs */ numRecords = DmNumRecords(gF); if (numRecords) { /* get a pointer to the list object */ lst = FrmGetObjectPtr(frm, FrmGetObjectIndex(frm,MainLstFList)); /* set the number of list choices */ LstSetListChoices(lst, NULL, numRecords); /* set the callback function to draw the list */ LstSetDrawFunction(lst, MainFormListDrawItem); } } Could anymore give me some pointers. Thanks. __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/ ------------------------------------------ The information in this transmittal and any attachments is privileged and confidential and is intended only for the recipient(s) listed above. You are hereby notified that any unauthorized distribution or copying of this transmittal or its attachments is prohibited. If you have received this transmittal in error, please notify Invivodata immediately at (831) 438-9550. ------------------------------------------ -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
