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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?
vigorous
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u must use the CEOL command which allocates the COM's with the Demands.
Ok
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Anonymous:
What's meaning of CEOL command? I don't understand it, could you please explain it further?
Thanks
vigorous
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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
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override OnMouseMove in the panel 
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you'll need ClipCursorAPI to limit the cursor to a specific area (rectangle)
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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
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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!
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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.
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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
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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
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Does anybody have some code or have any idea on how to get the sys or cpu temperature?
/\ |_ E X E GG
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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
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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
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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
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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
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How can I remove a field from a report at runtime?
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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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Hi All, I need help on a programme that Retrieves some data from a web site. what I need is for my windows form to have three boxs on it which the user uses to input some info.
the first box = A web site adress.
Second = (string Varible) e.g. "Engineer"
thered = (string Varible) e.g. "Location"
once these have been put into the boxess and a connect button pressed the form is connected to the web site and the infomation sent into the correct boxes on the web site.
On the web site with the boxs there would also be a button that the surfer would normally click. Can I add code to my project that will perform this task automatically.
I have already got the form to connect to the server useing the TcpClient class and used the following code to upload the data.
// data input to the box
Data = Location.Text +CRLF;
szData = System.Text.Encoding.ASCII.GetBytes(Data);
Server.UploadData("http://"+WebURI.Text,szData);
but this doesnt work and all I can download is the Souce code for the web site.
Can anyone Help, I dont want you to do it for me but guide me in the right direction. 
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I'm confsed. So, you want to have a form with 3 boxes and a connect button. Then you want to put the web site address in the first box and then I'm confused on what you want to do with the 2 other boxes.... Can you elaborate?
/\ |_ E X E GG
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Hi mate, I thought that it didnt make sence, I will explain. I have a form with 3 boxs on and a connect button. I can connect to a web site by putting in the URI but once I am connected I want the infomation that I have put into the other to boxs to be sent into two boxes that are on the web page and then for the web page button to automaticly click. The web site is a job site and the info that is put into the boxs are things like, " Job title" and in the other "Location". Once the button on the web site is pressesd it then takes these varables and finds the relivent jobs. I want to then download those jobs.
Hope that makes more sence
Thanks
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