C# Discussion Boards - CodeProject

Re: how to manager the uri in C#

silva10322-Oct-09 4:03

silva103

22-Oct-09 4:03

help me plz!

Using keyboard's key instead of the buttom.

niammirzaei21-Oct-09 16:22

niammirzaei

21-Oct-09 16:22

I,m looking for a code in Visual Studio to active keyboard's key instead of pressing any button in windows form. For example, when I want to Exit from windows form instead of pushing Exit button, I enter the Escape key. Hopefuly that was enough clear!!!

Re: Using keyboard's key instead of the buttom.

Richard Andrew x6421-Oct-09 16:47

Richard Andrew x64

21-Oct-09 16:47

Set the form's "Cancel Button" property to the button that closes the form.

Then, when you press Escape, it will activate the code behind that button.

Re: Using keyboard's key instead of the buttom.

niammirzaei21-Oct-09 18:58

niammirzaei

21-Oct-09 18:58

that works. Thanks alot.

Phone Calls

Bismark Appah21-Oct-09 14:55

Bismark Appah

21-Oct-09 14:55

How can i make online calls to mobile phones? (That is, how can i write a program to make phone calls through the internt to my mobile phone)

Re: Phone Calls

Richard Andrew x6421-Oct-09 15:56

Richard Andrew x64

21-Oct-09 15:56

Exactly what part of developing such an application are you having trouble with?

Re: Phone Calls

Bismark Appah21-Oct-09 22:05

Bismark Appah

21-Oct-09 22:05

I have written a program(Server and Client). The client can communicate to the Server using remoting to chat and using VOIP to Voice chat online. I need the server to transfer my phone calls i make from the client to any mobile phones in any part of the world. How can i go about this? What are the procedures or the codes required to achieve this aim?

Cut and Paste Attachements from Outlook

werner2721-Oct-09 10:26

werner27

21-Oct-09 10:26

Hi guys, you are my last hope.
read carefully to the end of my problem: i'd like to drag&drop attachments from outlook to explorer; depending on the pressed key (eg. shift) the email should be edited with the file name (like "Attached file shifted to C://test/file.pdf") or the full path and filename where the file have been pasted (->left mouse, no key: standard copy&paste; left mouse + shift: cut&paste - editing email with filename; left mouse + ctrl: cut & paste - editing email with full path)
there are several programms which remove attachments from email and saving them in defined folders; but this is not the solution; i want to remove the files with my mouse to individual folders (eg. proper project folders...) and have the attachments removed from the email (you know outlook folder size)

most of the features are standard for programming or a little bit of google. the crunchpoint what i couldn't find after days of googling:
i need an event FIRED IN OUTLOOK (eg. within an add-on) when an attachment is pasted to explorer from an email including file name and paste folder;

idea 1)
WM_DROPFIlE and similar: this message is only sent to the application where the file is pasted; does not work
idea 2)
register as listener in explorer: i didn't find a proper interface in explorer
idea 3)
register as listener in outlook: i didn't find a proper interface in outlook; an additional problem would be gathering the information from explorer of the filename and paste-folder

guys, does any one of you has an idea?
why in the C# forum? i'd like to implement in C#

THANKS FOR YOUR HELP

werner

How To Make A Data Bound Control

Kevin Marois21-Oct-09 10:15

Kevin Marois

21-Oct-09 10:15

I was considering making a usercontrol for a WinForms app that was simply a combo style control that displayed a list of hyperlinks when it was dropped down.

Ideally I'd like to have an option to data bind it, but I'm not sure how to do it? Is it simply a matter of coding a DataSource and DataMember property so that when they're set, it loads the control? Or is their more to it?

Thanks

Everything makes sense in someone's mind

Re: How To Make A Data Bound Control [modified]

Eddy Vluggen21-Oct-09 11:26

Eddy Vluggen

21-Oct-09 11:26

You might want to read the article on MSDN[^] Smile | :)

--edit--
The previous link points to the 'simple databinding walkthrough', but you'd need the complex one[^].

I are Troll Suspicious | :suss:

modified on Wednesday, October 21, 2009 5:32 PM

Re: How To Make A Data Bound Control

Kevin Marois21-Oct-09 13:52

Kevin Marois

21-Oct-09 13:52

Excellent, thank you!

Everything makes sense in someone's mind

is it possible to scroll Microsoft Word, Excel?

venkat S0721-Oct-09 7:24

venkat S07

21-Oct-09 7:24

Hi All,

It is not possible to scroll and to get ScrollInfo using Win32 scroll bar APIs such as GetScrollInfo with a handle to Microsoft Word, Excel, DirectUIHWND, ect.. It does not respond to WM_VSCROLL and WM_HSCROLL Windows messages.

I am able to get scrollinfo for windows controls, but unable to scroll MS Office Word, Excel.

is it possible to scroll Microsoft Word, Excel, DirectUIHWND, ect..?

Can anyone help me? please

Thanks,
Venkat

is it possible to get the scrollbar info from IE via user32.dll or any provider? how?

venkat S0721-Oct-09 7:19

venkat S07

21-Oct-09 7:19

Hi All,

It is not possible to use Win32 scroll bar APIs such as GetScrollInfo with a handle to an Internet Explorer's browser window. Additionally, Internet Explorer's browser window does not respond to WM_VSCROLL and WM_HSCROLL Windows messages.

I am able to get scrollinfo for windows controls, but unable to get scrollinf for browser and MS Office Word, Excel.

is it possible to get the scoll bar position of a browser controls?

and

is it possible to scroll Microsoft Word, Excel, DirectUIHWND, ect..?

Can anyone help me? please

Thanks,
Venkat

Converting to WMF

mypicturefaded21-Oct-09 5:31

mypicturefaded

21-Oct-09 5:31

I am having a little trouble converting files to WMF.
This code actually does change the extension, but I am having trouble believing it creates a true WMF.

Bitmap b = new Bitmap(@"Test.tif");
b.Save(@"Result.wmf", ImageFormat.Wmf);

I know there is probably a lot more to it, and I really don't know where to get started.

Re: Converting to WMF

Richard MacCutchan21-Oct-09 5:39

Richard MacCutchan

21-Oct-09 5:39

mypicturefaded wrote:
I am having trouble believing it creates a true WMF.

According to the documentation for Bitmap.Save() you are doing this correctly. What is it that makes you think it is not working?

Re: Converting to WMF

mypicturefaded21-Oct-09 5:45

mypicturefaded

21-Oct-09 5:45

Well, these WMF are stored in a database, and when needed they are called from some code and displayed. If I use a batch converter that I downloaded, convert the file, and store it in the database, the program displays the image correctly, but if I use my converter, nothing happens.

That makes me believe something is wrong with my converter.

Re: Converting to WMF

mypicturefaded21-Oct-09 5:52

mypicturefaded

21-Oct-09 5:52

Oh...From MSDN

"If no encoder exists for the file format of the image, the Portable Network Graphics (PNG) encoder is used. When you use the Save method to save a graphic image as a Windows Metafile Format (WMF) or Enhanced Metafile Format (EMF) file, the resulting file is saved as a Portable Network Graphics (PNG) file. This behavior occurs because the GDI+ component of the .NET Framework does not have an encoder that you can use to save files as .wmf or .emf files.

Saving the image to the same file it was constructed from is not allowed and throws an exception."

Re: Converting to WMF

Richard MacCutchan21-Oct-09 5:53

Richard MacCutchan

21-Oct-09 5:53

mypicturefaded wrote:
but if I use my converter, nothing happens.

Well I think you need to track through the code with the debugger in order to find which part of your converter is not working, and why. There is nothing here that would give any clue to what is wrong.

Re: Converting to WMF

mypicturefaded21-Oct-09 9:01

mypicturefaded

21-Oct-09 9:01

I have also tried this, it doesn't work, it seems to be a little closer though.
Read my post right above your last one, it states .Net doesn't have an encoder for saving as .wmf so it just makes it a .png file.

Here is my new code:

int width, height;
string filename = "testresult.wmf";

try
{
    Bitmap Sig = new Bitmap("test.bmp");

    width = Sig.Width;
    height = Sig.Height;

    Graphics sigGraphics = Graphics.FromImage(new Bitmap(width, height));
    IntPtr SigHDC = sigGraphics.GetHdc();

    Rectangle Bounds = new Rectangle(0, 0, width, height);

    Metafile sigMetaFile = new Metafile(filename, SigHDC, Bounds, MetafileFrameUnit.Pixel);
    sigGraphics.ReleaseHdc(SigHDC);

    sigGraphics = Graphics.FromImage(sigMetaFile);
    sigGraphics.PageUnit = GraphicsUnit.Pixel;
    sigGraphics.Clear(Color.White);
    sigGraphics.DrawImage(Sig, Bounds);

    sigGraphics.Save();

    sigGraphics.Dispose();
    sigMetaFile.Dispose();

    Image SigN = Image.FromFile("testresult.wmf");
    MessageBox.Show(SigN.RawFormat.Guid.Equals(ImageFormat.Wmf.Guid).ToString());

}

catch (Exception Meta)
{
    MessageBox.Show(Meta.ToString());
}

The last two lines of the try statement check to see if it is truly a .WMF. On my other files, it returns true. When I run them through this though, it returns false.

Re: Converting to WMF

Richard MacCutchan21-Oct-09 11:10

Richard MacCutchan

21-Oct-09 11:10

mypicturefaded wrote:
When I run them through this though, it returns false.

I'm afraid I'm as stumped as you on this. If the framework cannot save in wmf format then the only option would seem to be to find some external agent that will do it for you.

Re: Converting to WMF

Luc Pattyn21-Oct-09 11:22

Luc Pattyn

21-Oct-09 11:22

While WMF can deal with bitmaps, it is "generally used to store line-art, illustrations and content created in drawing or presentation applications" (Wikipedia). Now how would you convert an arbitrary bitmap (i.e. an image, not a drawing) to that, other than saying it is all one bitmap. But then why use WMF in the first place?

FYI: the inverse is also true; if you have a WMF drawing, you can't load it into a Bitmap; you can get Image.FromFile() to work on it, however you can't cast it to a Bitmap.

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Local announcement (Antwerp region): Lange Wapper? 59.24% waren verstandig genoeg om NEEN te stemmen; bye bye viaduct.

What is the best way to call methods in a commom class?

CBenac21-Oct-09 5:04

CBenac

21-Oct-09 5:04

I want to create an UtilLib class to contain commonly used methods (business logic, etc...) that are called from different modules inside the application.

So far, I know of 2 ways of doing it and would like to find out which one is better, or the advantages of each one.

1. Create an instance of the class (Inside the method that calls it) then call the desired method. I know the instance will be disposed once the calling method ends, or goes out of scope and the GC quicks in.

2. Make the class and all the methods static and call the method directly.
(Less code to write)

NOTE: The UtilLib will contain mostly simple methods. nothing too complex.

Re: What is the best way to call methods in a commom class?

Luc Pattyn21-Oct-09 5:07

Luc Pattyn

21-Oct-09 5:07

IMO as long as such methods don't have a state that needs to persist from one invocation to the next, go for statics. And when state is required, they belong in an object (a real object, not an instance of a MethodCollection class).

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Local announcement (Antwerp region): Lange Wapper? 59.24% waren verstandig genoeg om NEEN te stemmen; bye bye viaduct.

Re: What is the best way to call methods in a commom class?

CBenac21-Oct-09 13:36

CBenac

21-Oct-09 13:36

Thanks for the reply. It appears that the thread went totaly out of the subject.
I'll try to explain in another way: Using a classic example, let's say there is a Calculator class with 4 methods that perform the basic 4 aritmetic operations, and these 4 methods are called several times from several different classes spread throught several modules in the application (Thread is not an issue here,please)

The question is: What approach is better?

1. Always create an instance of the class inside every methods that uses it then wait for the GC to dispose of it.

2. Create 4 static methods inside the Calculator class and access then directly.

3. Is there any other way?

Re: What is the best way to call methods in a commom class?

Luc Pattyn21-Oct-09 13:43

Luc Pattyn

21-Oct-09 13:43

CBenac wrote:
It appears that the thread went totaly out of the subject.

I don't feel responsible for that, and I think I already answered your question.

Now if you want a calculator (real ones have state), then create a Calculator class as I said before. Make it static, a singleton, or a normal class, that's up to you. The really reusable one is the normal one.

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Local announcement (Antwerp region): Lange Wapper? 59.24% waren verstandig genoeg om NEEN te stemmen; bye bye viaduct.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.