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Qt-interest Archive, April 2005
QTextEdit height

• Subject: QTextEdit height
• From: Matt Spong <mspong@xxxxxxxxx>
• Date: Thu, 07 Apr 2005 10:18:28 -0400
• To: qt-interest@xxxxxxxxxxxxx

Hi

What is the correct way to create a single-line QTextEdit widget? 
Basically I just want a QLineEdit-style widget with support for rich 
text editing.

thanks
Matt

• Subject: QCanvas drawArea
• From: Iulian M <eti@xxxxxxxxx>
• Date: Thu, 7 Apr 2005 17:54:44 +0300
• Organization: Perlica Technologies
• To: qt-interest@xxxxxxxxxxxxx

hi,

Anybody succeded in using the drawArea method of QCanvas?

i'm trying to save a rect from the canvas to a QPicture or a QPixmap but i 
need the rect's top left corner to be different from (0,0)  ( eg. 
QRect (50,50,50,50) ).  drawArea() seems to be printing on the QPixmap the 
hole canvas ... ignoring the rect i pass.


QPixmap px;
px.resize(500,500); 
px.fill(white);
QPainter p(&px);
canvas()->drawArea(QRect(50,50,50,50),&p);
p.end();

the canvas is w=500, h=500  and all the canvas ends up in px (the QPixmap)

any ideeas??

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• Subject: Re: [ SOLVED] QCanvas drawArea
• From: Iulian M <eti@xxxxxxxxx>
• Date: Thu, 7 Apr 2005 18:02:31 +0300
• Organization: Perlica Technologies
• To: qt-interest@xxxxxxxxxxxxx

ah... found it ... it seeams that using double buffering solves the problem .
hope this helps someonelse .


On Thursday 07 April 2005 17:54, Iulian M wrote:
> hi,
>
> Anybody succeded in using the drawArea method of QCanvas?
>
> i'm trying to save a rect from the canvas to a QPicture or a QPixmap but i
> need the rect's top left corner to be different from (0,0)  ( eg.
> QRect (50,50,50,50) ).  drawArea() seems to be printing on the QPixmap the
> hole canvas ... ignoring the rect i pass.
>
>
> QPixmap px;
> px.resize(500,500);
> px.fill(white);
> QPainter p(&px);
> canvas()->drawArea(QRect(50,50,50,50),&p);
> p.end();
>
> the canvas is w=500, h=500  and all the canvas ends up in px (the QPixmap)
>
> any ideeas??

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• Subject: Re: QTextEdit height
• From: Girish Ramakrishnan <gramakri@xxxxxxxx>
• Date: Fri, 08 Apr 2005 12:04:22 +0530
• Mail-copies-to: gramakri@uiuc.edu
• Organization: UIUC
• Reply-to: gramakri@xxxxxxxx
• To: qt-interest@xxxxxxxxxxxxx

Hi Matt,
Subclass QTextEdit and then,
1. Disable word wrap.
2. Disable the scroll bars (AlwaysOff).
3. setTabChangesFocus(true).
4. Set the sizePolicy to Expanding:Fixed.
4. Handle return keypress correctly.
5. Reimplement sizeHint to return size depending on the font. Should be very
similar to the code in QLineEdit::sizeHint().
7. If you dont use a layout, resize(sizeHint()).

Hope I didn't miss anything :)

Girish

Matt Spong wrote:

> Hi
> 
> What is the correct way to create a single-line QTextEdit widget?
> Basically I just want a QLineEdit-style widget with support for rich
> text editing.
> 
> thanks
> Matt