On Thu, 21 Dec 2000, Schettino, John wrote:
> Shot in the dark... could it be an alignment issue?
>
> Try this struct instead:
>
> typedef struct _DrawLibType {
>
> RectangleType rect;
> Char textBuffer[MAX_BUFFER_LINES][MAX_LINE_WIDTH];
>
> } DrawLibType;
>
> - John Schettino
I've solved the problem. Thanks to all who responded.
Simon.
>
> -----Original Message-----
> From: Simon Drabble [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, December 21, 2000 12:21 PM
> To: Palm Developer Forum
> Subject: strange fatal exception
>
>
> Anyone know why this piece of code would cause a fatal exception on a real
> handheld (Palm V) but not on POSE running the same ROM?
>
> void DL_SetLocation(DrawLibType *dl, Int16 x, Int16 y, Int16 w, Int16 h)
> {
> Char buf[80];
> Char buf2[80];
>
> StrPrintF(buf, "%d %d", dl->rect.topLeft.x, dl->rect.topLeft.y);
> StrPrintF(buf2, "%d %d", dl->rect.extent.x, dl->rect.extent.y);
> /* the next call displays four values, junk of course */
> FrmCustomAlert(GEN_USER_ERROR_ALERT, "SetLocation", buf, buf2);
>
> dl->rect.topLeft.x = x; // exception occurs
> here
> FrmCustomAlert(GEN_USER_ERROR_ALERT, "Set X", buf, buf2);
> dl->rect.topLeft.y = y;
> FrmCustomAlert(GEN_USER_ERROR_ALERT, "Set Y", buf, buf2);
> dl->rect.extent.x = w;
> FrmCustomAlert(GEN_USER_ERROR_ALERT, "Set W", buf, buf2);
> dl->rect.extent.y = h;
> FrmCustomAlert(GEN_USER_ERROR_ALERT, "Set H", buf, buf2);
> }
>
>
> As I've indicated the values for x & y of the rectangle can be accessed, but
> not assigned to, even though this line earlier on causes no problems:
>
> MemSet(&dl->rect, sizeof(dl->rect), 0);
>
>
> The definition of DrawLibType is as follows:
>
> #define MAX_BUFFER_LINES 30
> #define MAX_LINE_WIDTH 35
>
> typedef struct _DrawLibType {
>
> Char textBuffer[MAX_BUFFER_LINES][MAX_LINE_WIDTH];
> RectangleType rect;
>
> } DrawLibType;
>
>
> Like I said, the code runs fine on POSE and causes a fatal exception on a
> real unit.
>
> Anyone have any ideas?
>
> Simon.
>
>
>
> --
> This message brought to you by the gateway to a dimension of hairy monkeys.
>
> Simon Drabble It's like karma for your brain.
> [EMAIL PROTECTED]
>
>
>
>
>
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