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I set the FlatStyle property.
The image has no background color at all, it's transparent.
I've taken a screenshot from Photoshop:
http://mitglied.lycos.de/fxlabs/terrain_ps.jpg
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I'm not really sure. I've never had that problem. You could try to google[^] for any similar problems.
Microsoft MVP, Visual C#
My Articles
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Can anyone give me a project where those alpha-blended toolbar icons work?
It's very annoying that such a basic thing doesn't really work!
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Will this bug with the "blue halo" be fixed?
I searched in the google newsgroups: there are many(!!) coders, who have similar problems. But the workarounds often don't work or arent statisfactory.
We should start a petition!
(Did Microsoft announce that this bug will be fixed in .NET 2.0?)
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BaShOr wrote:
Will this bug with the "blue halo" be fixed?
I dunno, there's a whole host of Image problems that have not been addressed.
top secret xacc-ide 0.0.1
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Hi,
How can i make a compound file in C#. What classes are usd please give me some idea.
Thanks,
ilmian
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What do you mean by "compound file"?
If you mean an archive of multiple files stored as one, I would suggest using a well known format like zip, since you don't have to write any code by using some of the available 3'd party libraries.
Regards,
Björn Morén
Stockholm, Sweden
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A "compound file" is an ActiveX document that serializes separate objects and distinct instances. Word, Excel, and PowerPoint are good examples. Compound documents are hosted in an ActiveX container that - if written correct - can aggregate toolbars and menus from the ActiveX document.
Technically, a compound document doesn't have to expose the necessary OLE interfaces for this, though. It's really just a hierarchical collection of objects serialized to a developer-defined format; I just mentioned what I did above because most modern compound documents to expose such interfaces.
Microsoft MVP, Visual C#
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There is no help for creating compound documents using the .NET Framework Class Library, or FCL (C# is just one language that uses the .NET FCL and compiled to Intermediate Language, or IL).
You would have to redeclare all the necessary interfaces (a few are already declared in the System.Runtime.InteropServices namespace, like UCOMIPersistFile) and P/Invoke any functions you need.
I do have plans to start on such a project when time allows, but it could be a while. I've worked a lot with compound documents and thought it would be fun.
One thing to keep in mind: while the underlying file system in Windows "Longhorn" (T.B.R. 2006...hopefully) will accept any file, WinFS (a database layer on top of NTFS) will take over storing the various distinct properties exposed in Office compound documents and I would imagine that Microsoft would recommend that other compound document formats would do so as well so the documents could be easily searched. This would only apply to properties exposed from the compound document, however, through interfaces like IPropertySetStorage and IPropertyStorage.
Microsoft MVP, Visual C#
My Articles
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In MSDN if i search for any interface which are used to make a compound file in VC, it says "Import and use the methods found in Ole32.dll.". can u please tell me the procedure in details how can i import Ole32.dll.
if i use "DllImport" attribute then how can i define the attribues of "StgCreateDocfile" method which is used to create a compound files in VC.
because it takes four parameters. the last parameter is "IStorage** ppstgOpen"
which i donot know how to write in C#.
Thanks for your answer
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Read Interoperating with Unmanaged Code[^], especially the topics dealing with P/Invoke and marshaling.
An IStorage** would be declared as ref IStorage. IStorage is an interface which is a reference type, which is basically a managed pointer. Using ref (or out) is like a pointer to that reference type. You would have to declare a managed equivalent of IStorage however, since you can't simply include it from the C/C++ headers. There are articles about portions of what you want here on CodeProject, but if you read through those sections and have a good understanding of COM programming and marshaling data types (like an unmanaged long is actually an int, or System.Int32, in .NET/C#).
Microsoft MVP, Visual C#
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Hi, there an interface "IPersistFile interface" in C#, What do you think can i use that interface to make a coumpound file. because i think i cannot write an interface that provides me the functionality of IStorage interface unless i completely understand the code in IStorage. is there any other way.
Thanks for your answer
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Sorry, but you need to understand compound documents and the interfaces used to access and create them, like IStorage or IPersistStorage.
Microsoft MVP, Visual C#
My Articles
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A compound file is a file that contains multiple streams. There is no native support for them in the .NET BCL, but there are open source projects that implement this kind of functionality. Try this project on SourceForge[^] for an example.
RageInTheMachine9532
"...a pungent, gastly, stinky piece of cheese!" -- The Roaming Gnome
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Interesting. I never tried searching for an existing project, but I wanted to do this myself anyway using most of the interfaces already present for the best interoperability with existing applications, namely current ActiveX document containers like Word and Excel.
Microsoft MVP, Visual C#
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Hi,
I wanna know if a C# Application can add options to others apps, like MSN. I run a C# App and when i run MSN, appears a new option, for example.
Thanks.
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Yes, if the other application exposes hooks to do so. You'll seen to see documentation for the other application though and I know nothing about MSN Messanger so I don't know if it does or not.
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
The Second EuroCPian Event will be in Brussels on the 4th of September
Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!
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MSN, for example, uses COM plugins. You could write a component in C# (gets compiled to IL in an assembly module) that exposes a COM-Callable Wrapper, or CCW. See Nick's article, Creating a CCW for COM-enabled, non-.NET Applications[^]. You register this appropriately, which is defined in the MSN Messenger SDK on the MSN Messenger web site (if you can find the SDK - they moved it some time back).
Since regasm.exe that ships with the .NET Framework SDK only registers the necessary keys and you need to register additional keys so that you can register as an MSN plugin, you'll need to read about the ComRegisterFunctionAttribute and ComUnregisterFunctionAttribute in the .NET Framework SDK.
For some applications, creating a CCW is the only way. You can also use P/Invoke to call native functions and pass them data. You could hook an application that exports the necessary hook functions as well.
There's lots of ways - provided that the application/library allows for it - and you can learn more by reading through the .NET Framework SDK, especially the section, Interoperating with Unmanaged Code[^].
Microsoft MVP, Visual C#
My Articles
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I am writing the chat program in LAN that is similar to the mIRC. When the user connect to server, it will activate the chat form that connected to server in port 9999, and when the user want to chat private, it will active the private chat form that connected to server in port 9998. In my program, I use the "privatechatform.ShowDialog()" to activate the private chat form, but it does not allow to chat in multi-users. but if I use the "privatechatform.Show()", my program is crashed. Please! Help me!!
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What was the exception? What error happened? Where did it happen? What did the stack trace look like?
You need to provide more information if we are to help you. The most obvious thing is contention of resources. When you only have on chat session there is only one thing using one resource, when you have two or more chat windows open they are sharing the same resource.
When you use ShowDialog() dialog opens and as you see the application ignores the user in everything but the dialog. This is the correct behaviour. So, while this dialog is open other events are not firing. If you use Show() the application will continue to receive events. Perhaps some event in another part of the application is interfering with your dialog.
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
The Second EuroCPian Event will be in Brussels on the 4th of September
Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!
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I'm trying to put a picturebox on a form but I've already done showDialog on the form. I try to refresh the form but it doesn't do anything. The picturebox is already instantiated and I just want to a dd a picture to it at run time.
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You didn't post any code or really explain exactly what the problem is, but this is how you would add a control at run-time:
PictureBox pb = new PictureBox();
pb.Image = Image.FromFile(fileName);
this.Controls.Add(pb);
If that doesn't solve your problem, you should post again, being more specific about what you need done and what you've got so far.
Charlie
if(!curlies){ return; }
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