Subject:
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Re: dragNdrop (Was: Ldglite must be faster)
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Newsgroups:
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lugnet.cad
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Date:
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Tue, 10 Sep 2002 18:45:15 GMT
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Viewed:
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1274 times
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In lugnet.cad, Don Heyse writes:
> Are you still keeping the SourceForge CVS archive up to date? I'm
> curious what the dragNDrop code looks like on MacOS. I suppose it's
> different for OSX though.
No, it's not up to date because I don't have broadband without firewall.
Here's all I had to write. Mac Drag Manager calls are the ones with ::
global scope. A lot of magic is hidden in the base class constructor
(LDragAndDrop) and more magic in LDragTask.
void
CPartView::ClickSelf( const SMouseDownEvent & inMouseDown )
{
if (mPart && ::WaitMouseMoved(inMouseDown.macEvent.where))
{
Rect myBounds;
CalcPortFrameRect(myBounds);
string id = mPart->Id();
long theLen = id.length();
const char *theStr = id.c_str();
// mouse is dragging
LDragTask theDragTask( inMouseDown.macEvent, myBounds,
1, FOUR_CHAR_CODE('TEXT'), (void*)theStr, theLen, 0 );
// try to restore things
FocusDraw();
}
}
Boolean
CPartView::ItemIsAcceptable( DragReference inDragRef, ItemReference inItemRef )
{
// We will accept TEXT flavor
FlavorFlags theFlags;
OSErr err;
err = ::GetFlavorFlags(inDragRef, inItemRef, 'TEXT', &theFlags);
if (err == noErr) return true;
return false;
}
void
CPartView::ReceiveDragItem( DragReference inDragRef, DragAttributes
inDragAttrs, ItemReference inItemRef, Rect & inItemBounds )
{
long textlen;
char buf[256];
::GetFlavorDataSize(inDragRef, inItemRef, 'TEXT', &textlen);
if (textlen>0 && textlen<sizeof(buf)) {
::GetFlavorData(inDragRef, inItemRef, 'TEXT', &buf[0], &textlen, 0);
string id( &buf[0], textlen);
SetPartID(id);
Refresh();
}
}
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Message is in Reply To:
 | | Re: dragNdrop (Was: Ldglite must be faster)
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| (...) Are you still keeping the SourceForge CVS archive up to date? I'm curious what the dragNDrop code looks like on MacOS. I suppose it's different for OSX though. (...) I take a bunch of different drop/paste 'protocols' on the Windows version and (...) (22 years ago, 10-Sep-02, to lugnet.cad)
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