Hello!
I've written a chunk of code that displays some text on the screen. I've
declared a gadget where the text will be displayed. However, whenever the
text is copied using StrCopy, I'll always get a "bus error". Can someone
help me?
static void PrintOnScreen(const CharPtr text)
{
Int16 lineHeight;
Int16 strLength;
Int16 gadgetWidth;
Boolean canFit;
Word objIndex;
RectangleType bounds;
CharPtr tempText1;
CharPtr tempText2;
FormPtr frm;
// init variables
FntSetFont (stdFont);
lineHeight = FntLineHeight();
strLength = StrLen(text);
// get the bounds of the text window
frm = FrmGetActiveForm();
objIndex = FrmGetObjectIndex (frm, MainTextWindowGadget);
FrmGetObjectBounds (frm, objIndex, &bounds);
gadgetWidth = bounds.extent.x;
FntCharsInWidth (text, &gadgetWidth, &strLength, &canFit);
if (canFit)
{
CheckScrolling (bounds, lineHeight); // make sure got space for 1 line
WinDrawChars (text, strLength, 0, CurrentYPos);
CurrentYPos += lineHeight;
}
else
{
tempText2 = "";
*********** Problem lies here ***********
StrCopy (tempText1, text);
StrNCopy (tempText2, text, strLength); // copy string that fits
*********** Problem lies here ***********
CheckScrolling (bounds, lineHeight);
WinDrawChars (tempText2, strLength, 0, CurrentYPos);
CurrentYPos += lineHeight;
do {
// now we get the rest of the string
tempText1 += strLength;
// init variables and determine whether rest of string fits
strLength = StrLen (tempText1);
gadgetWidth = bounds.extent.x;
FntCharsInWidth (tempText1, &gadgetWidth, &strLength, &canFit);
// copy string (regardless of fit or not)
StrNCopy (tempText2, tempText1, strLength);
CheckScrolling (&bounds, lineHeight);
WinDrawChars (tempText2, strLength, 0, CurrentYPos);
CurrentYPos += lineHeight;
} while (!canFit); // loop until rest of string fits
}
}
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