Selective highlighting of Items

[Kapil]

Are you aware of QCanvas::allItems()?

yaa.. but i had to maintain a list of different item types.. so i made a list for each set of items... allItems would have returned me all the items but i needed seperate list for each type..

Can we see the code?

Q3Canvas *m_pCanvas;
Q3CanvasLine *pLine;
QList <Q3CanvasItem*> m_globalOutYLine;
 
//m_globalOutYLine is filled with a canvas lines...
//lineVal is the value of the line which has to be coloured from a value set
 
pLine = (Q3CanvasLine*)m_globalOutYLine[lineVal];
pLine->setPen(QPen(color));
pLine->show();
 
m_pCanvas->update();

Q3Canvas *m_pCanvas;
Q3CanvasLine *pLine;
QList <Q3CanvasItem*> m_globalOutYLine;

//m_globalOutYLine is filled with a canvas lines...
//lineVal is the value of the line which has to be coloured from a value set

pLine = (Q3CanvasLine*)m_globalOutYLine[lineVal];
pLine->setPen(QPen(color));
pLine->show();

m_pCanvas->update();

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Did you mark those items as changed?

QCanvasItem *item;
QCanvas *canvas;
//...
canvas->setChanged(item->boundingRect());

QCanvasItem *item;
QCanvas *canvas;
//...
canvas->setChanged(item->boundingRect());

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No i didnt do so... would try to do so and see what happens..

Thank you,

with regards,
Kapil