Re: Sending Keyboard Events - C# Discussion Boards

Searching for Carriage Return in string?

econner3-Sep-04 19:15

3-Sep-04 19:15

What might be the best way to check a string for an instance of a carriage return?

Would something like this work?

if ( s.IndexOf(Convert.ToChar(13)) > 0 )
{
//CR Found
}

Is there a better way?

Re: Searching for Carriage Return in string?

mav.northwind3-Sep-04 21:01

mav.northwind

3-Sep-04 21:01

Marginally faster (without Convert) and correct (will also find CR at the beginning of the string):

if (s.IndexOf('\r') >= 0)
{
}

mav

Re: Searching for Carriage Return in string?

Werdna4-Sep-04 10:04

Werdna

4-Sep-04 10:04

But it depends if the string was created on windows, unix or mac.
On windows you'll have \r\n
On unix, just \n
and mac just \r
so if you have unix string and search for \r you won't find new lines.
You can use Environment.NewLine to get the version of new line that your program is running on.

Re: Searching for Carriage Return in string?

mav.northwind4-Sep-04 23:20

mav.northwind

4-Sep-04 23:20

He was asking for Carriage Return, not newline character(s).
But otherwise, you're correct Poke tongue | ;-P

How To Send Info To One's Email Address.

WartHog0003-Sep-04 15:36

WartHog000

3-Sep-04 15:36

How do you take info from a text box and send it to ones email address?
-Thanks

Wt.Hg

Re: How To Send Info To One's Email Address.

mav.northwind3-Sep-04 21:09

mav.northwind

3-Sep-04 21:09

Quite easy. There's a class in the framework for this: System.Web.Mail.MailMessage.
You might want to look it up in the framework documentation.

Regards,
mav

Sending Keyboard Events

Alex Leshinsky3-Sep-04 14:31

Alex Leshinsky

3-Sep-04 14:31

I there any way that i could broadcast keyboard events?
(make it seem like a use clicked a key, when infact he didnt)

thx for the help Smile | :)

Re: Sending Keyboard Events

Alex Leshinsky4-Sep-04 9:06

Alex Leshinsky

4-Sep-04 9:06

I found a way to move the mouse:

const int MOUSEEVENTF_LEFTDOWN = 0x02;
const int MOUSEEVENTF_LEFTUP = 0x04;
[DllImport("user32")] public static extern int SetCursorPos(int x, int y) ;
[DllImport("user32")] public static extern void mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo);
private void button1_Click(object sender, System.EventArgs e)	{
	SetCursorPos(200,200);
	mouse_event(MOUSEEVENTF_LEFTDOWN,0, 0, 0, 0);
	mouse_event(MOUSEEVENTF_LEFTUP,0, 0, 0, 0);
}

can this be modified to broadcast keys?

Re: Sending Keyboard Events

Stefan Troschuetz5-Sep-04 2:18

Stefan Troschuetz

5-Sep-04 2:18

There is a much easier way to move the mouse pointer:
Just set the System.Windows.Forms.Cursor.Position property.

To broadcast keystrokes, you could use the System.Windows.Forms.Sendkeys.Send method.

www.troschuetz.de

Re: Sending Keyboard Events

Alex Leshinsky4-Sep-04 9:17

Alex Leshinsky

4-Sep-04 9:17

I also found this webpage describing how to send keyboard events:
http://www.mkssoftware.com/docs/man1/sendevent.1.asp[^]

However, i have no idea what it means, could someone explain it to me?

Re: Sending Keyboard Events

EssOEss4-Sep-04 20:35

EssOEss

4-Sep-04 20:35

That is for some MKS toolkit. You probably don't have it, whatever it is.

There were quite a few methods to signal keypresses in Win32 API. SendInput(), keybd_event(), SetKeyboardState(). Look them up in MSDN for more details.

Re: Sending Keyboard Events

Anonymous4-Sep-04 21:17

Anonymous

4-Sep-04 21:17

thank you very much, i will look those up

Re: Sending Keyboard Events

Anonymous4-Sep-04 21:27

Anonymous

4-Sep-04 21:27

Ok so i checked out SendInput(): http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/UserInput/KeyboardInput/KeyboardInputReference/KeyboardInputFunctions/SendInput.asp[^]

But i dont understand what to do, please help, thanks.

Re: Sending Keyboard Events

EssOEss6-Sep-04 5:09

EssOEss

6-Sep-04 5:09

Check out this article for info on how to use Win32 functions in C#:
http://www.codeproject.com/dotnet/PInvoke.asp

ToolBar and toolBarButton Problem

Inquire2you3-Sep-04 14:09

Inquire2you

3-Sep-04 14:09

Anyone help me !!!!

1) How to set a color to ToolBar ? Confused | :confused:

2) How to set a color to ToolBarButton ? Confused | :confused:

Thank YOu

Re: ToolBar and toolBarButton Problem

Mr. Rogers4-Sep-04 12:15

Mr. Rogers

4-Sep-04 12:15

You looking for?
ToolBar.BackColor

Not too sure on the Button

Re: ToolBar and toolBarButton Problem

Inquire2you6-Sep-04 9:56

Inquire2you

6-Sep-04 9:56

Thank You. I know/try this property.
Unfortunately, ToolBar.BackColor won't work Confused | :confused:

Re: ToolBar and toolBarButton Problem

Mr. Rogers6-Sep-04 10:56

Mr. Rogers

6-Sep-04 10:56

Sorry man, didn't know that you'd tried that. It appears to be overridden and maybe this was done just so that the toolbar could inherit from Control but not do anything for the backcolor property. You might have to write your own if you're set on changing the color.

Global Keyboard Hook

Alex Leshinsky3-Sep-04 13:45

Alex Leshinsky

3-Sep-04 13:45

Hi, I am making an application that requires a global keyboard hook, so i am using the one i found on this website: http://www.codeproject.com/csharp/globalhook.asp
However when i try to creat a new hook:

hook = new UserActivityHook();

It throws an exception:

throw new Exception("SetWindowsHookEx failed.");

why is this happening (i am using visual studio whitbey, c#, .NET framework v2)

Re: Global Keyboard Hook

Alex Leshinsky3-Sep-04 20:59

Alex Leshinsky

3-Sep-04 20:59

EDIT: it seems to work only when u launch the exe (not im debug)
why is that?

image viewer with flash plugin

Pyro Joe3-Sep-04 13:37

Pyro Joe

3-Sep-04 13:37

hey guys,
i'm working on a program which will be able to display as many types of images as possible. I'm kind of a newbie, but thus far i can view the typical .jpg and .gif files. As well as a couple others such as bitmaps. However, i have many flash animations, which i have made, and i would like a way to display these flash animations/videos in the program as well. I know in internet explorer and other web programs, this is done through the flash plugin. Can i do this similarly with a program.

As i'm kind of a newbie, this may be way over my head, but if it can be done without dozens of lines of code, please send me your thoughts on how this can be accopmlished. or just tell me i'm stupid and that it isn't possible.;)
<marquee>thanks!!!

Laugh | :laugh:

Using HLSL with Managed DirectX

WillemM3-Sep-04 7:45

WillemM

3-Sep-04 7:45

I have made a simple 3D engine capable of rendering simple meshes and X-File based meshes. It works kinda well, but I got a problem with HLSL.

How can I create and use a simple Effect written in HLSL??
Does anyone know how to do that?

"Every rule in a world of bits and bytes can be bend or eventually be broken"

Re: Using HLSL with Managed DirectX

Nick Parker3-Sep-04 8:01

Nick Parker

3-Sep-04 8:01

Something like this[^]?

- Nick Parker
My Blog | My Articles

Re: Using HLSL with Managed DirectX

Heath Stewart3-Sep-04 8:22

Heath Stewart

3-Sep-04 8:22

Nick's solution works for Managed DirectX 9. How you do it in your 3D engine is implementation-specific. I recommend you use Managed DirectX 9 for your application. Yes, this requires DirectX but it has much better support and the Managed library is a ground-up development, not just a simple wrapper around the typelibs for DX.

A good book to learn about MDX9 is Managed DirectX 9 Kick Start : Graphics and Game Programming[^].

This posting is provided "AS IS" with no warranties, and confers no rights.

Software Design Engineer
Developer Division Sustained Engineering
Microsoft

[My Articles]

Re: Using HLSL with Managed DirectX

WillemM3-Sep-04 8:41

WillemM

3-Sep-04 8:41

I did build the engine from managed directX. This is because it was the easiest way to build it. Thanks for the tip of the book.

I got the effects to work now Big Grin | :-D

"Every rule in a world of bits and bytes can be bend or eventually be broken"

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