limit the mouse movement - C# Discussion Boards

Member 69108916-May-04 2:59

16-May-04 2:59

I want to transfer images from client to server,till now i used TCPListener and TCPClient classes in C#.means i use simple socket programming,but i read some where that tapi uses H.323 protocol which is faster for transfering video/audio streams or any other streams. My question is that can H.323 protocol be used for transferring images from client to server.give me any sort of help

mughalali

Re: Transfering Images with TAPI

Dave Kreskowiak16-May-04 4:28

Dave Kreskowiak

16-May-04 4:28

See the post I submitted down on your other thread.

The TAPI 3.1 docs start here[^] on MSDN. You'll have to P/Invoke a BUNCH of functions and translate structures from C++ into C# in order to use them.

RageInTheMachine9532

GetBaseline from Font?

Roger Alsing16-May-04 2:39

Roger Alsing

16-May-04 2:39

How can i get the baseline of a font object?

eg: (imagine this is a lower case g :P)

<br />
----------------- (text top is about here (top of capital letters)            <br />
   <br />
<br />
 ********<br />
**    **<br />
**    **<br />
**    **<br />
 ******* -------- (baseline is here)     <br />
      **<br />
      **<br />
 ****** --------- (textbottom is here)<br />

is it even possible to get this from a gdi+ font?

i need it for my 100% managed gdi+ html renderer engine.
http://www.compona.com/xhtmlrender10.gif[^]

//Roger

Re: GetBaseline from Font?

leppie16-May-04 4:09

leppie

16-May-04 4:09

look at Font.EmHeight in points, Font.GetAscent in points, Font.GetDescent in points, Font.Height in pixels

The best way to convert it, it to Font.GetHeight()*(Font.GetAscent/Font.EmHeight) given a top left as the 0,0.

^{top secret xacc-ide 0.0.1}

Serial communication problem

wk_vigorous16-May-04 0:10

wk_vigorous

16-May-04 0:10

I use MSComm control in a C# applications. Most time the program works well. But the only problem is that, at a certain position in the transporting sequence, the server terminal has returned reply, but the OnComm event doesn't execute immediattely. It will execute in several seconds. That seems the MSComm control doesn't work at the point for several seconds.
Anybody meet similar problem?
Can you help me? Confused | :confused:

vigorous

Re: Serial communication problem

Anonymous16-May-04 1:21

Anonymous

16-May-04 1:21

u must use the CEOL command which allocates the COM's with the Demands.
Ok
Big Grin | :-D

Re: Serial communication problem

wk_vigorous16-May-04 21:52

wk_vigorous

16-May-04 21:52

Anonymous:
What's meaning of CEOL command? I don't understand it, could you please explain it further?
Thanks

vigorous

limit the mouse movement

Member 89285615-May-04 20:44

Member 892856

15-May-04 20:44

I don't know to work very well with GDI+.
Can someone help me?
I draw some ellipse in the area of a panel,and I can move this rectangle even outside the panel and I loose the ellipse(I can't see it).
I want to limit the mouse movement in the area of a panel,how can i do this?
If someone can help me,please tell me how?

Thanks

Re: limit the mouse movement

leppie15-May-04 22:15

leppie

15-May-04 22:15

override OnMouseMove in the panel Smile | :)

^{top secret AdvancedTextBox}

Re: limit the mouse movement

Hesham Amin15-May-04 22:55

Hesham Amin

15-May-04 22:55

you'll need ClipCursorAPI to limit the cursor to a specific area (rectangle)

Re: limit the mouse movement

Member 89285616-May-04 4:31

Member 892856

16-May-04 4:31

private void panel1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)<br />
{<br />
		<br />
	Point mDL = new Point(e.X,e.Y);<br />
<br />
	if (mDL.X>panel1.Width || mDL.Y<panel1.Height)<br />
	{<br />
	  mDL.X=panel1.Location.X+panel1.Width-20;<br />
	  mDL.Y=panel1.Location.Y+panel1.Height-20;<br />
	  this.Cursor = new Cursor(Cursor.Current.Handle);<br />
	  Cursor.Position = new Point(Cursor.Position.X - 40, Cursor.Position.Y - 40);<br />
	  Cursor.Clip = new Rectangle(panel1.Location,panel1.Size);<br />
	}<br />
	panel1.Invalidate();				<br />
}

still i can move my ellipse outside the panel.And after I move the cursor outside the form I can move the cursor only in the upper part of the form?!?!
Can you give me another tips??
Thanks

How to generate keyboard events from a sys service

catalin_im15-May-04 11:38

catalin_im

15-May-04 11:38

Hello!

I have a service installed on some winxp machines and i want the service to send the CTRL+ALT+DEL keyboard event to the host operating system, followed by a username,TAB and a password, so that i could log on the user locally on the target machine.

I don't know how to do that, nor wether it is possible for a .NET service or application to take control over the keyboard at such a low level.

Though, i can launch a MFC exe who does that but i don't know how to create that code, because my knowledge about VC++ & MFC is poor.

If anyone knows a resource, an example, a place to start digging from, for either the MFC or .NET solution, please reply.

Thanks!

Re: How to generate keyboard events from a sys service

TigerNinja_15-May-04 11:48

TigerNinja_

15-May-04 11:48

You would need a global hook, to capture the ctrl+alt+del keyboard sequence, unless you just want to capture it from a specific application, then you could use an application hook.

Here is an article on windows hooking with .NET that should get you started
http://msdn.microsoft.com/msdnmag/issues/02/10/CuttingEdge/[^]

HTH

R.Bischoff

Denn Gott hat die Menschen so sehr geliebt, daß er seinen einzigen Sohn für sie hergab. Jeder, der an ihn glaubt, wird nicht verlorengehen, sondern das ewige Leben haben

Re: How to generate keyboard events from a sys service

catalin_im16-May-04 5:56

catalin_im

16-May-04 5:56

Thanks for the tip, but I wanted not to catch the keyboard events, but to generate them.

I will send through the network to the service on the remote machine a username and a password and it will create the CTRL+ALT+DEL event and then, one by one, the letters of the username and password strings, so that i can locally logon the user at that remote computer.

I don't know how to create those events, without using any windows.forms classes, wich normally treat such events.

Re: How to generate keyboard events from a sys service

Heath Stewart16-May-04 12:13

Heath Stewart

16-May-04 12:13

Ctrl+Alt+Delete is not sent to the hook chain. It is handled ONLY by Windows (specially, most likely LSA).

Microsoft MVP, Visual C#
My Articles

Re: How to generate keyboard events from a sys service

Heath Stewart16-May-04 12:18

Heath Stewart

16-May-04 12:18

First, your service must be allowed to interact with the desktop service. It does this either by logging on as LocalSystem with the "Interact with Desktop" (or something like that) option, or as a specific user (although then it would only work for that user).

Then you need to get the desktop handle for the session (like P/Invoking GetDesktopWindow - which may return NULL is there are no active users) and you can P/Invoke SendInput. See http://pinvoke.net/print.aspx/user32.sendinput[^] for an example. You can use the Keys enumeration in .NET, since the enumeration member values are the same as the native VK enumeration constants.

Microsoft MVP, Visual C#
My Articles

Sys or CPU Temperature

eggie515-May-04 10:56

eggie5

15-May-04 10:56

Does anybody have some code or have any idea on how to get the sys or cpu temperature?

/\ |_ E X E GG

Re: Sys or CPU Temperature

TigerNinja_15-May-04 11:45

TigerNinja_

15-May-04 11:45

I am interested in how you do this as well, however one thing, the computer will have to have sensors on the motherboard for you to be able to get this information.

I couldn't find any API, if I do I'll let you know.

Good luck.

R.Bischoff

Denn Gott hat die Menschen so sehr geliebt, daß er seinen einzigen Sohn für sie hergab. Jeder, der an ihn glaubt, wird nicht verlorengehen, sondern das ewige Leben haben

Re: Sys or CPU Temperature

eggie515-May-04 11:56

eggie5

15-May-04 11:56

So far the only means of doing this i have found is if your motherboard have monitor software that comes with it. THen you could call it's dll. However that's not an option for me.

What mb do you have?

/\ |_ E X E GG

Re: Sys or CPU Temperature

Orkun GEDiK15-May-04 11:46

Orkun GEDiK

15-May-04 11:46

Hi,

You need to use SNMP or WMI in order to get CPU temperature. If you use SNMP, you need knowledge on socket programming.

Regards,

Ahmet Orkun GEDiK
System & Software Support Specialist (SAP R/3)
ASTRON

Re: Sys or CPU Temperature

TigerNinja_15-May-04 11:49

TigerNinja_

15-May-04 11:49

I browsed WMI, which is rather large, and couldn't find anything, can you specify the class please ?

Thx.

R.Bischoff

Denn Gott hat die Menschen so sehr geliebt, daß er seinen einzigen Sohn für sie hergab. Jeder, der an ihn glaubt, wird nicht verlorengehen, sondern das ewige Leben haben

Re: Sys or CPU Temperature

eggie515-May-04 11:51

eggie5

15-May-04 11:51

Are you sure about WMI? The only thing I found in that was Win32_TemperatureProbe and that only gets you information about the "thermometers".

What are you refering to?

And SNMP is a "standard for gathering statistical data about network traffic and the behavior of network components." Will this really get me a CPU temp?

Thank you for your time.

/\ |_ E X E GG

Re: Sys or CPU Temperature

Orkun GEDiK15-May-04 14:25

Orkun GEDiK

15-May-04 14:25

Yes, you can use SNMP in order to get temperature through MIB, if your OS supports. But, i'm not sure about that Windows supports SNMP.

Regards,

Ahmet Orkun GEDiK
System & Software Support Specialist (SAP R/3)
ASTRON

Crystal reports

blankg15-May-04 10:25

blankg

15-May-04 10:25

How can I remove a field from a report at runtime?

Re: Crystal reports

Heath Stewart16-May-04 12:06

Heath Stewart

16-May-04 12:06

According to documentation and other questions asked in this forum, the report definition (for Crystal Reports) isn't modifiable (like that; i.e. adding and removing fields) at runtime - at least not from what is exposed to .NET. The most you could do is get the ReportObject and set its Width and Height to 0 so that it doesn't display.

Microsoft MVP, Visual C#
My Articles

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