How do I change the icons to Alert buttons like OK, CANCEL etc?
If you look at the source code for Alert there really isn't a lot there once you get past the comments and properties. What I've done in the past is to just copy the Alert class and modify my custom version however I see fit. That way you don't have to deal with the mx_internal stuff. If you are using Flex 4, there is no spark version of Alert, so another thing you can do is create your own spark version, which will give you even more control over skinning your alerts using skins etc. Sounds like a big deal, but it's actually much easier than you'd think (speaking from experience here.)
Just specify the iconClass paremeter of the Alert class. A detailed example can be found here.
You can find a complete source code and application example here
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We need a tree view with File system and check boxes in QT. Is there any way to achieve that?
The tree we need would look something like below:
UPDATE:
I am able to achieve it with subclass of QFileSystemModel. Still have few challenges, but at least subclass is working. Below is the code if anyone needs it. Below is the link to the code -
https://drive.google.com/file/d/1qViZ3iEW2pV2th0jQhzneDL14SEhIgS0/view?usp=sharing
The pending work is to apply a wait cursor (or make treeview uneditable when the check/uncheck is taking place).
PS: It will take a lot of time if root node is checked.
Well, all of that can be achieved with minimal customizations of built-in classes, actually those checkboxes is almost the only thing that has to be done yourself.
QFileSystemModel already provides a proper model for displaying the current filesystem contents, it can be subclassed
As for QML, the best demo is already provided by Qt, check the File System Browser Example. This example uses some deprecaded Qt functionality, but still it shows the basic concept.
The modern techniqes can be also found in the answers to the following question: Qt File Browser based on QML
Hopefully, all that helps you, good luck!
I am looking for an equivalent of a grid control in Rebol, to display some table data.
I came across this script: face-grid.r
...and its associated demo: face-grid-demo.r
This seems to be an excellent start. Does anyone know if there is some active and/or newer version of this grid, or something similar?
Depending what you need exactly.
Brett's datagrid is a bit basic. For example, it does not handle scrollers by itself.
Henrik has done a list-view with tons of features. Maybe it can be a choice for you :
list-view.
But there are also different list styles part of the VID extension kit from the same author.
Here is the list documentation.
All are for Rebol2.
I've been looking for some inspiration with wxpython as far as the GUI goes. Everything in the demo looks boring and uninspiring so I want to go in my own direction but I can't figure out how to use my own buttons I made in photoshop or my own background images.
I'm kind of new to GUI programming so I ask if you could please be clear in what steps I should take. Once I intialize the frame...how to I load my custom buttons, or set the panel background?
As acattle pointed out, I already wrote on how to change a panel's background. You should note that wxPython isn't a themable GUI toolkit. It uses the native widgets of the OS wherever possible and most of the time, those just aren't very themable. If you need that, then you should look at Tkinter's (especially ttk) or pyside/pyQt.
If you need bitmap buttons, there are several options:
BitmapButton
GradientButton
AquaButton
PlateButton
I did some googling and I found this tutorial for setting the background of panels.
A bit more googling and I found this post talking about wxPython's Bitmap Button Class and showing some code examples.
I would suggest being very very careful designing your GUI if you're going to use custom images. You need to pay special attention to your spacing and your text sizes or your GUI might come out looking like crap.
I've got a basic PyQt QFileDialog file browser goin in Python, Kubuntu.
My issue is I would like the "tab key" in the file input to act as tab-complete does in a shell.
Is there any way to accomplish this?
From a UI/UX standpoint are you sure that's what you want? In forms and dialogs tab has traditionally meant go to next field. You might be confusing the user. Or you might start a revolution in User Experience for forms :-)
Just curious if that's what you really want?
You will have to subclass the QFileDialog, and change the behavior. It will probably not be easy.
I haven't made use of PyQt yet, but I think the QCompleter class might be most of the way to what you want:
http://doc.trolltech.com/4.5/tools-completer.html
I don't know if it tab completes or if that's something you'd have to add yourself.
I am not sure you can actually, i don't see any access to the input field in the documentation of QFileDialog. Qt is fairly aggressive at hiding implementation detail from it's users. You might be able to do this by taking the implementation of QFileDialog (C++) and modify it for your purpose.
Has anybody experience in building a custom style in Qt? What I have in my mind is a complete new style that affects all kind of widgets. I have seen some examples in the web for a custom combo box. But I have no idea how much time and code it takes to build a "complete" new custom style ... maybe someone can give me a hint.
We think of using Qt 4.3 (or even newer) ...
Check out the Stylesheets facility in Qt 4. While it's still a hassle, it's way easier than doing a full-on custom style. You can just adjust one visual facet at a time and try it out.
It pays attention to inheritance. So if you style the font in QWidget, then every visual widget will also use that font. And so on.
I have developed a "new" style that changed the appearance of much of an application. It did take some time, and quite a bit of experimentation. I also derived my style from the generic windows style, to allow it to handle some of the stuff I didn't want to mess with. All told, I think it took me a week to get most of what I wanted, with practically no prior exposure to the styles.
In order to actually develop one, I would get into the source for their styles example, which has a "wood" style. I put my own style in place of the example style, and started changing things while using the example program to check how it looked. Depending on how you are developing it, you might want to have a configuration file so you can easily change some of the values without recompiling.
You might want to look at existing styles. You can find quite a few of them on kde-look.org, in the Styles / 4.0 section.
We've done it in the past (in Qt 3), and it's extremely time-consuming. We had a lot of problems with flickering, redraws not working the way we expected, sluggish behavior, bugs in the Qt implementation. It a lot less straight-forward than it seems, and there's little support or user experience too. Unless you need something really particular (as we did), I'd say it's not worth the trouble.
Other frameworks are supposed to make it easier (some Java-based?), but I don't have first hand experience.
If you don't need to radically change the widget style, you might want to try using widget style sheets:
http://doc.qt.digia.com/4.4/stylesheet.html