Midi interfacing - C# Discussion Boards

Re: New to graphics drawing.....any assistance?

leppie26-Jul-03 7:42

leppie

26-Jul-03 7:42

theRealCondor wrote:
I know I create my System.Drawing.Pen(Color.Black), etc. and I think I have to create a System.Drawing.Graphic object. But beyond that I'm lost as to the next step to have that Graphic bound to the pictureBox and having the points drawn.

Override the OnPaint method and use the Graphics object provided.

leppie ::AllocCPArticle(Generic DFA State Machine for .NET);

Re: New to graphics drawing.....any assistance?

LongRange.Shooter28-Jul-03 3:25

LongRange.Shooter

28-Jul-03 3:25

Well....I cannot override a method of a control in my form from my form. But that was the start of my searching.

First I hooked into the Paint event for the control and used control.Invalidate() to fire that event. It worked somewhat but I had a result that was not all that visible and I was having problems drawing points.

My second attemt did work though which I extended from the DrGUI article on doing Conway's Life.

I created a Bitmap object Bitmap img;, created a graphics object Graphics g = Graphics.FromImage(img); then I just set my pictureBox.Image = img once I drew my graphics inside the image. Works great.

Now all I have to do is get factor in form resizing, image scaling, and I have it all done!

_____________________________________________
_{The world is a dangerous place.
Not because of those that do evil,
but because of those who look on and do nothing.}

How to open a registered file in application

BigAndy25-Jul-03 23:59

BigAndy

25-Jul-03 23:59

Hi guys,

My application opens and saves files in a particular format. I have added the entries in the registry to associate this file type with my application (by extension). When you double-click one of these files in Windows Explorer, my application launches which is great. Now, how do I get the path of the file that was clicked? I've checked the arg[] passed into the Main method and it's not there. How do I get it so I can open the file? Also, how can I open the clicked file in a currently running instance of my application?

Thanks in advance
Andy

Re: How to open a registered file in application

Mazdak26-Jul-03 4:59

Mazdak

26-Jul-03 4:59

BigAndy wrote:
I've checked the arg[] passed into the Main method and it's not there.

Of course its there. Whats your code that you check it?

Mazy

No sig. available now.

Re: How to open a registered file in application

BigAndy26-Jul-03 5:39

BigAndy

26-Jul-03 5:39

Oh no they're no...

static void Main(string[] Args) <br />
{<br />
	StreamWriter objSW = new StreamWriter("C:\\Args.txt", false);<br />
	objSW.WriteLine("Args Start------");<br />
	for(int x = 0; x < Args.GetLength(0); ++x)<br />
	{<br />
		objSW.WriteLine(Args[x]);<br />
	}<br />
	objSW.WriteLine("Args End------");<br />
	objSW.Close();

.....

The file (Args.txt) has the "Args Start------" line and the "Args End------" line but nothing in between. Any ideas? I'm using Windows XP Pro.

Andy

Re: How to open a registered file in application

Rocky Moore27-Jul-03 0:01

Rocky Moore

27-Jul-03 0:01

How did you create the registered extention?

Your example works fine here.

Rocky Moore <><

Re: How to open a registered file in application

BigAndy27-Jul-03 22:06

BigAndy

27-Jul-03 22:06

OK, I found the problem. The exe path in the registry needs to have a %1 after it to denote the file path ("C:\Program Files\A Folder\Program.exe" "%1"). Thanks for the help.

Midi interfacing

NareshkBajaj25-Jul-03 22:52

NareshkBajaj

25-Jul-03 22:52

hi,
if any one has seen the code given for the MIDI and compiled the same it gives an error of some header file .Can you suggest form where to get that dmusicc.h file.
also if it could be clarified if MIDI can be accessed by another Application Software.If,yes how is it possible?

Regards

design engg

Re: Midi interfacing

Rocky Moore25-Jul-03 23:08

Rocky Moore

25-Jul-03 23:08

You seem to be in the wrong area. This the C# not C++.

The file is a DirectX and would be were ever you installed the SDK.

Rocky Moore <><

.NET Licensing

Alex Korchemniy25-Jul-03 21:56

Alex Korchemniy

25-Jul-03 21:56

I found an awesome licensing product for .NET

Take a look at it http://www.xheo.com/Products/Licensing/[^]

Just a few months back I couldn't find anything that would support .net

Does anyone know of any other similar products?

Reflections for automatic casting

Ista25-Jul-03 18:12

Ista

25-Jul-03 18:12

I am using getValues

lets say in SQL its a bit field which I believe is a SqlByte class I think

and lets say the field is a boolean

Is there anyway using getType and the like to do autmatic conversion without using switch statements to determine the type.

a way using reflection to query the two types and convert them to the compatible type?

links or examples most welcome

nick

Re: Reflections for automatic casting

Ista25-Jul-03 18:12

Ista

25-Jul-03 18:12

the SqlDataReader GetValues method by the way

Showing the newest event in a list box

eggie525-Jul-03 17:38

eggie5

25-Jul-03 17:38

How do I make a list box automaticly scroll down to the bottom of the list?

/\ |_ E X E GG

Re: Showing the newest event in a list box

Rocky Moore25-Jul-03 22:33

Rocky Moore

25-Jul-03 22:33

Are you talking about just items that have been added or selected? If you select the last item it should scroll into view.

Rocky Moore <><

Re: Showing the newest event in a list box

eggie525-Jul-03 22:39

eggie5

25-Jul-03 22:39

No, automaticly...

without any user interaction.

/\ |_ E X E GG

Re: Showing the newest event in a list box

Rocky Moore25-Jul-03 23:12

Rocky Moore

25-Jul-03 23:12

eggie5 wrote:
No, automaticly...

Not sure what you mean by "Automatically". A listbox does not automatically scroll. When you add an item to your listbox (which you get from somewhere), you would have to do at :

myListbox.SelectedIndex = myListbox.items.Add("LastItem");

This would have the listbox scroll the item you add into view.

Rocky Moore <><

FindWindow analogue in C#

zecodela25-Jul-03 16:23

zecodela

25-Jul-03 16:23

hi,
would anyone give me some idea how i can check if an application running by C# like using FindWindow in VC++?
thanks,
jim

Re: FindWindow analogue in C#

J. Dunlap25-Jul-03 16:41

J. Dunlap

25-Jul-03 16:41

Why not use FindWindow in C#? Wink | ;)

[DllImport("user32.dll")]
private static extern IntPtr FindWindow(
                     string lpClassName,
                     string lpWindowName);

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: FindWindow analogue in C#

zecodela25-Jul-03 16:50

zecodela

25-Jul-03 16:50

does it a good practice using unmanaged module?
i seldom use p-invoke. any idea?
thanks,
jim

Re: FindWindow analogue in C#

J. Dunlap25-Jul-03 17:07

J. Dunlap

25-Jul-03 17:07

If you're wanting easy cross-platform capabilites, wou might not want to use the Windows API. Otherwise, it's just fine.

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: FindWindow analogue in C#

Eric Gunnerson (msft)25-Jul-03 17:26

Eric Gunnerson (msft)

25-Jul-03 17:26

Try the Win32Window class at
http://www.gotdotnet.com/team/csharp/code/default.aspx

Re: FindWindow analogue in C#

J. Dunlap25-Jul-03 17:31

J. Dunlap

25-Jul-03 17:31

That's http://www.gotdotnet.com/team/csharp/code/default.aspx [^].

BTW, nice classes. They're made by you, right?

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: FindWindow analogue in C#

zecodela25-Jul-03 17:32

zecodela

25-Jul-03 17:32

thanks...
seems the only way is using win32 api

Re: FindWindow analogue in C#

J. Dunlap25-Jul-03 17:38

J. Dunlap

25-Jul-03 17:38

Most of the .NET classes use the Windows API - they're just wrappers.

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Getting frames from mshtml

tstyaps25-Jul-03 14:15

tstyaps

25-Jul-03 14:15

Hi,

I am using shdocvw/mshtml to automate IE. I'm able to create an instance of IE, retrieve a document, and manipulate the document (i.e. fill in text fields, click buttons, etc).

The problem I'm having though, is working with pages that have frames. I am getting the top level page, and cannot seem to access any of the frames themselves. When I try calling the property .frames off my document, I get the error:

An unhandled exception of type 'System.InvalidCastException' occurred in UIAutomation.exe. Additional information: No such interface supported.

Does anyone know why this is? Maybe I'm assigning it improperly? When I enumerate through .all, I do see the frameset and frame elements. This problem happens on even simple pages such as:

http://www.htmlcodetutorial.com/frames/basicframeset.html

Thanks.

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