How to change a ComboBox to display items in a Loader? - qml

I would like to have a ComboBox that handles large amounts of content by loading them asynchronously inside a Loader, so I can display a little BusyIndicator over the drop-down.
Is it maybe possible to achieve this through a style? I want to avoid having to recreate a ComboBox from scratch.

No. It may be possible in the future, though:
This one is a bit tricky to get right, and is still work in progress. It is not difficult to style the popup background, the same way it's currently doable for MenuStyle. What remains, as you pointed out, is to make that API public.
What we can't promise, is to be able to style the popup window shape. If QtQuick was backing store based, then most platforms support shaping the window. But QtQuick is OpenGL based, and desktop platforms support this in different ways. On mobile and embedded platforms, we can't use a separate window, so we need to build an abstraction that would use Item-based popups.
I'd suggest voting for and watching QTBUG-39476 if you're interested in this feature and don't want to write your own ComboBox.

Related

Changing application layout via buttons in VB .NET

Currently I would like to program an application gathering forms that are callable with buttons on the side. For this, I am using the latest build of Visual Studio Community. One way I thought of would be to literally put all the form elements (textboxes, lists, etc.) in the application window and only enable them whenever the according button is clicked on. However, if this is the way to do it, I find it quite messy and unpractical, and I'm pretty sure there's another way around.
After some research, I have learned about the MDI layouts, but they don't suit my taste. I would like to keep everything in one single frame.
Could you give me a hand?

Scrolling with wxwidgets

good day,
I have made the scrollbar visible on my panel, but for the life of me I do not know how to capture the scroll events. How is this done? im using versio 2.8.
Even with wxScrolledWindow the scrollbar is visible but how does one get the event and then process it?
I have tried using connect() and no luck.
Pleas point me to an example.
Thanks
Several points:
Using wxScrolledWindow is different from using the individual, standalone, wxScrollBar controls. To capture events for the former, you use wxEVT_SCROLLWIN_XXX events and the corresponding event macros, while for the latter you use wxEVT_SCROLL_XXX.
Typically you should be using wxScrolledWindow which takes care of scrolling automatically, i.e. you rarely need to catch any events, are you sure you really need to do this?
Look at the scroll sample for many examples of using different scrolled windows if you hadn't already.
Do yourself a favour and switch to a supported 3.0 version instead of a decade old 2.8, there is really no reason to start a new project using 2.8 nowadays.

Is it possible to resize a DateTimePicker or MonthCalendar Control in VB.net

Essentially I want to re-size my dateTimePicker control to fit its parent container. I have tried to do this both through the Control Editor and programmatically but I simply cannot get the drop down calendar to expand at all. So 2 part question:
a) Is this even possible to do?
b) Is there an easy-to-implement solution to having a good looking calendar that fits its parent field? (i.e. using a data grid or something similar)
Any help or knowledge is greatly appreciated!!!
The size of both objects is fixed and defined by the size of its font. Thus you might change its size by affecting the font size. This works fine with DateTimePicker but does not seem to work with MonthCalendar. After a quick research I have found a pretty curious recommendation on the MSDN forum: "you can consider third party MonthCalendar controls to meet your requirement temporarily".
There are quite a few third-party options (after a really quick search I found this) or you might even create one by your own. I personally haven't ever had any problem with the in-built controls but if the size is so important for you I guess that you would have to search/develop something by your own.
Further recommendation: rely on WPF which does contain a resizable control (DatePicker). I want to highlight here that I don't like WPF at all and that thus this recommendation is because I don't see any other option (inside .NET).

How to animate group of images in winform application using VB.Net

I am trying to load bulk images and trying to put them as a slideshow and it's working fine.
Now I would like to have some effects like flip out,ease out effect and fade effect on those images when changing them without using any user control as I would like to do with the existing picturebox.Is it possible to do so?
If so can anyone point me to some resources.
As I have done googling and found some useful links and I am placing here that might helpful to someone.And all these have use seperate usercontrols to do, and I am not looking into that.
http://code.google.com/p/dot-net-transitions/
http://www.codeproject.com/KB/cpp/fluid_effect.aspx
The built-in picture box has no such capability. Your solution will require custom-drawing regardless what control you use (assuming you don't get a 3rd party product).

Surface Table Project with Web Browsers

I'm working on a project that will use a Surface table to show web browsers that can be manipulated via the multitouch behaviors. I'd like to be able to show a browser at full screen and then resize, move, etc.
I'd also like to be able to launch a new, separate browser windows that can also be manipulated through multitouch.
Any suggestions on controls to look into for this?
Thanks!
This is a non-trivial task. As far as I know, many have tried and put months of effort into it but none of been very successful. Don't even bother trying to get something to work well based on WPF's built in WebBrowser control. Best bet is to start with the SurfaceScatterView control and trying to put a 'Chromium' control inside of it (http://wpfchromium.codeplex.com/). It appears that even this isn't straightforward though: http://wpfchromium.codeplex.com/discussions/244117