Windows API
So i know that the WinForms touches on the Windows API a little, but frankly its horrible. ESPECIALLY with the layered windows and flickering. So i was wondering if anyone has wrote partial, or full wrappers for the Windows API.Im particularly interested in the Layered Window aspect, but really any part of the API is a good place to start.
Update: I found the Windows API Code Pack here: http://code.msdn.microsoft.com/WindowsAPICodePack but it seems that it doesnt wrap Layered Windows? Am i correct in assuming this?
Native API (Windows)
Ive heard a little bit about the Native API, but im not quite sure what it is for? what features does it provide? would it be a good idea to look into?
Summary (Questions in a nutshell)
Does anyone know of an existing (partial or full) wrapper of the Windows API?
If the answer is no to question one, where would be a good resource to learn about it myself, and potentially write my own?
An explanation of the Native API? What does it do? Can I use it to make applications better? Can I even USE it at all?
An answer to any of those is highly appreciated :) thanks
You could start at PInvoke.NET.
The LayeredWindows actually work better in WinForms than windows.
The native windows controls don't even have the alpha channel support of the WinForms analogues, so native windows flicker, and require massive amounts of subclassing to override the painting to use alpha compatible routines.
You would be better off going to WPF. The windows team has not treated the native control's well at all, going so far as to remove support for a style (WS_EX_COMPOSITED) if aero glass is enabled which, given the way that windows controls paint, effectivly made it impossible for any application to paint flicker free if it uses child window's as controls.
WPF "draws" windows controls, but does not use discrete (native) child windows to represent individual controls. This gives it control over when and how its window surface is rendered.
The Windows API is huge. There is a ton of stuff in it. Windows Forms is a wrapper of parts of it. WPF is a wrapper of parts of it. Parts of the Base Class Libraries (eg System.IO.*) are wrappers of parts of it. The Code Pack is a wrapper specifically of things that were new in Vista and Windows 7 and not in Windows Forms or WPF.
Have you looked into WPF? Combined with P/Invoke of specific API functions, it might take you a long way towards where you want to be.
Related
How do you put a Windows Form Application on top off everything on your screen?
Just setting the topmost-property isn't enough when you're running fullscreen games.
If anyone has a solution for good old Forms i'll also be happy
I've seen many posts on this forum that say it's impossible but i know it's not couse i've seen alot of apps (fraps, teamspeak overlay, xfire, etc) that does this.
If you want to use a graphics library to display something always on screen, you may want to start here on SO. There are wrapper libraries available like OpenTK for OpenGL. If you want to go the DirectX route you'll need to load in the C++ libraries and access them using P/Invoke. There's a good tutorial to start with on msdn. Wrappers for DirectX also exist in the form of SharpDX.
I want to write a desktop gadget that will group icons on my desktop (using c# & WPF).
It will be a docked window that I can drag icons to it and they will stay their. Also there can be couple of this windows.
Where do I begin?
**I saw all the post here about it but I got lost. Please direct me to examples and explanation pages.
To expand on cevik's answer:
You cannot create WPF applications as gadgets BUT you have two options (which aren't as bad as you'd expect).
The reason is that widgets are composed mainly of web pages (HTML) and not executable (*.exe).
The problem of course is that WPF will only work with & produce executables.
First option - Windows API:
When I said you can't what I really meant is you can't use the Windows Vista/7 gadget platform to make your widgets.
However, you can always achieve a similar effect by using the Windows API.
The Windows API will let you do stuff to windows such as making them always on the background of other programs, which sounds to me like ~80% there (The rest would be stuff like making sure your window doesn't get re-sized or minimized, etc.).
Just as a note, the function you'd be looking for to make the window behind all other windows would be SetWindowPos (specifically the second parameter).
However make sure there isn't a library which already implements these stuff because it can be rather difficult (and consist of A LOT of surprises).
Second option - Silverlight
silverlight can be perceived as WPF for the web.
That obviously solves our problem.
However there is a cost to it, as expected.
Silverlight doesn't have all the features WPF has (possibly not all of the .NET framework as-well, not sure about that as I'm not really using it).
However it should be more than enough to get you by so you should definitely check it out.
Once you have your Silverlight application (and webpage) you'll have to create a manifest & install the gadget to your desktop. See here how to do so.
Maybe this will help you.
Template to easily get started on developing a Sideber Gadget using Silverlight 3.0 or 4.0 controls in C#.
After toying a little with the new Silverlight 4 camera features, and being really disappointed that these were not included in WPF, I looked at the Silverlight assemblies and found that they more or less delegate all work to agcore.dll.
Do you think it is a good idea to package agcore.dll with my WPF application, and copy/paste or rewrite all classes concerning cameras to WPF, to get these nice features there?
That particular approach isn't likely to work, unfortunately. There's a lot more to getting C# code to work with Silverlight than just referencing the appropriate DLL. Silverlight is actually a completely different implementation of the CLR, so you can't just call into agcore.dll from a WPF app and have it run.
If you need Silverlight features in your app, I can think of two ways to get them: (1) you could conceivably host a completely separate instance of Silverlight inside a browser control in your WPF app, though communication with that Silverlight instance becomes complicated (though not impossible); or (2) you could write your entire app in Silverlight OOB (Out-of-browser)/trusted mode.
You can try VideoCaptureElement in my WPF MediaKit. It will show a webcam in WPF. It does have a different API than the Silverlight webcam API, but it should have just as many features.
Duplicate:
Is it possible to achieve the “Aero Glass” look on XP?
If I use Winforms and I write a win32 application with it, I can see the Aero glass effects in Vista but not in XP.
How could I achieve the same look across different platforms? I am using WPF.
As a side question, did Microsoft write the Aero glass effects using WPF? If so, shouldn't the glass effect be the default WPF look on the other platforms?
What "Aero effect" are you referring to? If you're talking about the window glass, then I'm afraid you're out of luck, as the glass effect is made possible only through Vista's Desktop Window Manager.
If you're simply looking for window transparency, rounded corners, etc., then this is certainly possible in XP. Check out this article for more information.
Ok, so most of the DWM stuff is handled by a DLL called dwmapi.dll, it is all in C++ COM because that is how Microsoft writes it's APIs, you may have noticed that to call the methods in the API you have to use some unmarshalled boolean types etc, this is because it has to reach unmanaged code, some of the operations that need to take place are too dangerous for .NET to watch over without interfering, you may also notice that all the return types aren't actually returns you put in Vars as "out" types so the code can modify them in memory and then that information can be read back into your managed .NET code. As far as a way to get similar effects in Windows XP, the only way I can think of is using Windows Blinds and then making a translucent WPF form with a gradient background (with a glass like effect) it would be quite easy to do, but the window will look out of place in Vista and XP and I don't think that it is such a good idea.
Hope this helps :P
Simon
I work on a large C# application (approximately 450,000 lines of code), we constantly have problems with desktop heap and GDI handle leaks. WPF solves these issues, but I don't know what is the best way to upgrade (I expect this is going to take a long time). The application has only a few forms but these can contain many different sets of user-controls which are determined programatically.
This is an internal company app so our release cycles are very short (typically 3 week release cycle).
Is there some gradual upgrade path or do we have to take the hit in one massive effort?
You can start by creating a WPF host.
Then you can use the <WindowsFormHost/> control to host your current application. Then, I suggest creating a library of your new controls in WPF. One at a time, you can create the controls (I suggest making them custom controls, not usercontrols). Within the style for each control, you can start with using the <ElementHost/> control to include the "old" windows forms control. Then you can take your time to refactor and recreate each control as complete WPF.
I think it will still take an initial effort to create your control wrappers and design a WPF host for the application. I am not sure the size of the application and or the complexity of the user controls, so I'm not sure how much effort that would be for you. Relatively speaking, it is significantly less effort and much faster to get you application up and running in WPF this way.
I wouldn't just do that and forget about it though, as you may run into issues with controls overlaying each other (Windows forms does not play well with WPF, especially with transparencies and other visuals)
Please update us on the status of this project, or provide more technical information if you would like more specific guidance. Thanks :)
Do you use a lot of User controls for the pieces? WPF can host winform controls, so you could piecewise bring in parts into the main form.
WPF allows you to embed windows forms user controls into a WPF application, which may help you make the transition in smaller steps.
Take a look at the WindowsFormsHost class in the WPF documentation.
I assume that you are not just looing for an ElementHost to put your vast Winforms app. That is anyway not a real porting to WPF.
Consider the answers on this Thread What are the bigger hurdles to overcome migrating from Winforms to WPF?, It will be very helpfull.
There is a very interesting white paper on migrating a .NET 2.0 winform application toward WPF, see Evolving toward a .NET 3.5 application
Paper abstract:
In this paper, I’m going to outline some of the thought processes, decisions and issues we had to face when evolving a Microsoft .NET application from 1.x/2.x to 3.x. I’ll look at how we helped our client to adopt the new technology, and yet still maintained a release schedule acceptable to the business.