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thanx for your advise with Registry Search it works!
But now other problem occured: In Registry I keep value as string "User=www" and if I trying to get value from Registry through Registry Search it returns me "User=www" in my TextBoxex(A) form textbox value. And I want only "www" as my TextBoxex(A) form textbox value. So could you tell me how can I parse vlues from which I recieve from registry?
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You normally don't store registry values like that. A much more common practice would be to name the key "User" and set the corresponding value to "www". Windows Installer has its limitations. If you insist on storing your values this way, then you're responsible for having to parse them and there's not an easy way of doing it. The only way possible would be to write a custom action (in C or C++, it'd be difficult and too inefficient to do so with a .NET Installer class) that gets a handle to the current session, gets the property and splits it into new properties, all before the dialog is displayed. Then you'll need another one to put them all back before the WriteRegistryValues action.
All this would also require manual hacking of the MSI since the VS.NET installer project will be of no help and won't let you do things like this. It is not meant to be a commercial deployment replacement.
Microsoft MVP, Visual C#
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Looking, it's RemovePreviousVersions. Honestly, it shouldn't have been that ellusive, should've it? 
Again, set that aforementioned property to true and make sure you increment your Version number. Trust me, it will solve the problem if you do it right. The VS.NET installer project makes this easier, though it's not hard even if hacking the MSI itself with Orca or something that I use a lot. Just make sure you NEVER change the UpgradeCode unless you really know what you're doing, since you'd have to hack the MSI to fix it.
When you install the newer version, the older one is removed automatically in a transacted process, so that any critical failures leave everything the way it was before you tried to install.
Microsoft MVP, Visual C#
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Well, I opened my Install project and I go to the Project->Properties and I just could not find any RemovePreviousVersions option...
Where is it?
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Select your project then look at the Property Grid found in the bottom-right corner of VS.NET by default. There's lots of properties there, including RemovePreviousVersions that's been there since VS.NET 2002.
Microsoft MVP, Visual C#
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THANX A GREAT! It's interesting to me how do you know all these stuff?  You must studuing during 24h a day? 
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I love to learn (and by learn, I mean to truly understand) all that I can about many things, especially application development. It's a never-ending process.
Microsoft MVP, Visual C#
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Hi,
Just a quickie. I have created a flashy interface using Picture Boxes as buttons and want to have them make a 'click' sound when pressed for user feedback. Is there a simple call which I can use? Or any piece of code to do the job,
Regards,
John
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See http://www.codeproject.com/cs/media/windowssoundevents.asp[^]. Just find the key for the navigation sound in the registry (the article mentions where in the registry to find these events) and call PlaySound (as documented in the article) with that key.
Support for system sounds will be added to the FCL in .NET 2.0 due out in early 2005.
Microsoft MVP, Visual C#
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How I can show the contents of the control PC to other clients in the LAN?
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If you're using Windows XP, click on Start-<Help and Support. There is functionality to view existing Windows sessions already built into Windows XP, along with an invitation system. You could also install VNC (free download from the web - just google to find it) which allows you to connect to existing sessions, IIRC, but the Windows Remote Desktop Client won't work because it starts a different terminal session with each connection so they won't see your desktop session.
Microsoft MVP, Visual C#
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I'd like to create a form that contains a number of controls that can be moved, and behave like forms. Similar to the Access relationship view. I've figured out that I need to do the following:
* External Form style border
* Move function upon mouse down on header (thick title bar in forms).
* Resize function upon mouse down on sides or base.
* Lock mouse pointer internal to form when moving object.
I was looking to set the border style to form, and then hoping that the header and side parts of the border could be used to fire events.
As for the mouse, i was looking at tying the mouse handle to the inside of the form, but i'm not sure how to do it, and the thought alone makes me wonder what could go wrong.
So i'm not sure how to go about this, does anyone know where to begin?
Cheers
Cata
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One way is to implement .NET's drag and drop features for controls. I've mentioned this several times in the forum, so try a search. Just use some custom clipboard format (like ".NETControl" or something) and you can reposition controls that way.
You could also handle the MouseDown event and mark a flag. In the MouseMove event update the control's Location as you move if that flag is set. In MouseUp, reset the flag so that just simply moving the mouse doesn't move a control when your mouse passes over it.
Microsoft MVP, Visual C#
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[EDIT: Ah, did a google search for drag drop controls, and got a working example. It's perfect. Only problem I have now is figuring out how to implement a Form style border on a control. If you can offer any help into that, i would be grateful]
Ah, thanks for the ideas Heath.
The second one would cause problems with moving the mouse outside the area, and while i could lock the box to the perimiter, it would still look unproffsional.
How does this work with object borders?
I've tried a bunch of searches, but still haven't found anything. Sorry to be a pain, but i've done a whole bunch of permutations of Move, Control, Controls, Drag, Drop, but come up empty handed.
Cheers
Cata
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Ok, I have the Drag Drop working, but i'm interested in a couple of other things.
How can i stop the mouse pointer from leaving the form / control / container while in the process of dragging?
How would i configure a form type border on a control? I know they are sperate objects, but i've no idea where to start to set them up. Not sure what i'm looking for in google tbh.
Cata
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See the Capture property. It won't stop the mouse from going outside the bounds of the container, but you can always stop the control from moving further through various means. I'm sure stopping the mouse is possible and, IIRC, have seen it done but I'm really not sure how and am sure it requires a lot of low-level notification message handling, perhaps even app or sys hooks.
You could, through quite a bit of work most likely, detect when the mouse is over a border (within a certain threshold) of a control and change the mouse cursor appropriately. The Mouse* events could be handled the same way as I mentioned in my previous post, only you would change the Size property (remember, you must create a new Size object since its a value type, or just change the corresponding properties of the control).
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Ok, i'll look into that.
What about borders?
I've made something that looks like a 12 year old could do better. But it can detect when you select the header part, and the 4 side bits when the mouse is over them, change to resize arrows and can be re-sized.
The centre has a filled panel that is the content. It's really a sloppy job that isn't fully working yet. How would I make a windows type form with smooth corners?
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See the ControlPaint class, which has several helper methods for drawing borders given a certain Rectangle (bounds).
As far as actually showing the control while dragging, you'll have to do what I mentioned before with the mouse events. This is pretty much what designers like VS.NET and SharpDevelop do, at least to some degree. Designers are also not magic - the controls themselves are instantiated and painted at runtime with various design-time decorators.
Microsoft MVP, Visual C#
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I found this article if you are interested. I'm going to go and try and implement it in C#, but it's something for you to add to your knowledge base:
http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/articles/q179/1/92.asp&NoWebContent=1
(What's the tag to set it up as a link?)
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Don't bother. After I noticed that all but one function that was declared in VB already exists in the .NET FCL (like Control.PointToClient), I thought I'd look at the Cursor class and sure enough, there's a Clip property that takes a Rectangle that defines the clipping rectangle, in screen coordinates (so use Control.RectangleToScreen from your Control to get it's bounds in screen coordinates).
Ahh, the power of cheese research.
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ARG! I was so proud of finding that :P
Oh well, to bad.
Just the Form border thing to figure out now. Is there any Control that represents a forms border?
(hmmm... cheese...)
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A form border is not a control, it's just colored pixels (i.e., painted). Use the ControlPaint like I mentioned earlier and handle the mouse events appropriately. That's all window managers like Windows basically do. Everything currently comes down to painting a 2D image into a device context and handling various events when the cursor is in a certain position.
Microsoft MVP, Visual C#
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Ok, can do all the moving and re-shaping. I've created a set of panels around the edge of the control that can be used to re-size or move it.
But i really need the final touches.
Where can i find the windows graphics for top, bottom, and sides of a window to insert into the bordering panels? I was looking at the ShellStyle.dll. Am I going the long winded way around?
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Hi!
Does anyone knows if there's an object to handle events, like the Api's functions CreateEvent() or SetEvent().
I need to set events to check some objects state, and using WaitForSingleObject() to wait for the event. In C++ I would do:
SetEvent(hEvent1);
dwerror=WaitForSingleObject(hEvent2, timeout);
ResetEvent(hEvent1);
How could I do something like that in C#?.
Thank you.
Demian.
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You could start by searching Code Project. Here you will find a number of articles on Event Handling. Here is a promising looking article:
http://www.codeproject.com/csharp/csevents01.asp[^]
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question."
--Charles Babbage (1791-1871)
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