Re: [PyKDE] How do I delete a QCanvasItem?

[Moray Taylor]

I think I have figured out how to do it.

MyCanvasItem.setCanvas(None)

It gets rid of it, and seems to free any memory it was using.

Any comments?

Moray

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[PyKDE] Deleting items from Canvas

[Moray Taylor]

Hi,

I have a program that puts items onto a canvas, keeps a reference to it, and
deletes the reference when I want to remove the item from the canvas. What I
want to know is...


A) Is this all I need to do?
B) If not, what is the reccommended way of removing items from a canvas?

The reason I ask, is that I run PyQT on SGI, Intel, and PowerPC, the results
from the PowerPC version are very different to the Intel/SGI, I cannot get
the items to remove themselves from the canvas on PPC, the code I use is
*exactly* the same.

I need to know if it's the PowerPC with the problem or otherwise.

Thanks

Moray

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[PyKDE] Transparent rectangles on canvas

[Moray Taylor]

Hi,
Is it possible to draw a transparent rectangle on a Qt Canvas, I appreciate
XRENDER would be required. The Qt docs mention something about RGBA, which I
understand is normal RGB with an alpha channel.

I cannot figure out what I am supposed to do to use the alpha channel
though, any tips?

Thanks

Moray

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[PyKDE] Renaming listviewitems

[Moray Taylor]

Hi,

I am having difficulty renaming listview items, when I triple click it, the
edit box pops up and I can edit it, but how do I get the new name that I
have typed in? 

I have a okRename function in my class, which is getting run, but doesn't
seem to complete the edit. The edit box remains until I cancel it.

Thanks

Moray Taylor

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[PyKDE] ListView background

[Moray Taylor]

A while ago, I asked on this group wether it was possible to set a
background pixmap in Qt Listview, the answer was no. I have no learned that
it is (maybe there is a version issue here.).

Just so that anyone else wants to do it, the method you want is...

SetpaletteBackgroundPixmap(QPixmap)

Tada!

Moray

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[PyKDE] PyQt of PPC woes...Continued.

[Moray Taylor]

The story so far...

Import qt
Import sys
From qt import *
A = QApplication(sys.argv)
D = A.desktop()
W = D.width()
---Segmentation fault---

This happens with all of the PyQt examples.

This was with Yellow Dog Linux 2.2.

I have since tried it with Mandrake 8.2 on my Powerbook G4

Results are exactly the same.

Tried with binaries, and from source, practicaly every version of 3.x.
Used different versions of gcc and python, both from source and binary.
Tried everything I can think of.

I really don't want to get rid of my Powerbook, but PyQt is the only reason
I own a computer (seriously).

If anyone has any advice, experienve, reassuring words, I really want to
hear from you.

Thanks

Moray

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[PyKDE] Newbie seeks QT Canvas example

[Moray Taylor]

Hi,

I am looking for a short, simple example of displaying an image (PNG, JPEG
or whatever) on a canvas using PyQT and Python. I can use the
SetBackgroundPixmap, but I cannot figure out how to place a picture at an XY
coordinate.

Thanks for any help

Moray


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