Hi, I think I understand your problem I take it you are using interrupts with your serial comms as in my article:Serial Communication using WPF, RS232 and PIC Communication[^] . I'm an electrical engineer so I do a lot of work with micro-controllers and programming on UI levels. From my understanding at the moment the you can not determine which micro-controller has sent the data of which the interrupt loads and displays. There are a few solutions to you problem which depend on your ability to reprogram the micro-controllers. 1st I will assume this is not an option: If you can ensure that the micro-controllers respond one after each other the you could try the older approach of creating another thread and reading all the data into a buffer this more common in C# applications. I can provide an example of this if required however it's not used that often any more. This will attempt to read the data in a let you deal with it a bit at a time however is less efficient than interrupts and your likely to to loose data. The best option to ensure data integrity is simply to wait after polling each micro-controller until data is received however I understand this may not be possible if at time the micro-controller does not respond with data. If this is true you will have to introduce a timer to continue after if no data is received. 2nd If you can reprogram the micro-controllers: This is far easier, 1st simply ensure each micro-controller sends and ID tag before sending any data this way you can determine the start of each package and the device. An alternative which is the bus standard norm is a busy line. It requires an extra connection between your micro-controllers when a controller receives a request for data it will set this line high. Before any other micro-controller can send it's data it must wait for this line to go low. This method again relies on data always being sent on request and has inherent problems such as if one micro-controller takes a considerable time to transmit for example it has a long string of data to send you could find yourself polling for data from micro-controllers before they have had time to send there previous data. This timing issues are important to deal with and I would recommend the first option for ease as you could still end up

thank you very much I was really confused

cppwxwidgetsss wrote: xmlns:local= "clr-namespace:lab1" This may be a stupid question, and if so, I apologise. The statement above states that any future references in this XAML to 'local' are taken to refer to items in the 'lab1' namespace of this project. Are you sure the namespace is the same in your .cs files?

cppwxwidgetsss wrote: I want to tell me if it is really rigt or wrong I'm going with wrong. XAML and XAML generators do NOT produce "complicated, professional designs"...designers do. In fact, nothing in your post has anything to do with XAML... You may want to try out Expression Blend 3[^], which supposedly now imports PSD/AI files preserving the layers and allowing editing in Blend. Mark Salsbery Microsoft MVP - Visual C++ :java:

You'll probably want to change the template of the button to give it a different layout. The section "Creating a ControlTemplate" in the Controls Overview[^] has an example. Mark Mark Salsbery Microsoft MVP - Visual C++ :java:

To add to what Chris said, it is probably that you are continually firing Paint messages - why not use MouseEnter and MouseLeave to handle the re-paint? That way, you don't recalculate on every mouse move, and you only fire the Paint when the image should be changing. BTW: it is not good practice to use absolute numbers for mouse position checking - why not use the position of the button instead? No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced. This message is made of fully recyclable Zeros and Ones

Hi, and thank you for your answer but unfortunately I eliminated the "e.base();" from the code but the problem wasn't solved I am trying the other option you mentioned modified on Saturday, June 20, 2009 8:29 AM

cppwxwidgetsss wrote: I want to know is it better to have a GDI+ and/or have a System.Drawing or/and it is better to have a custom Control WPF is a good choice if you need beautiful UI. :) Navaneeth How to use google | Ask smart questions

Here is one such tutorial. http://dotnetperls.com/Content/DllImport-Interop.aspx[^] And you will find lots of it on MSDN. «_Superman_» I love work. It gives me something to do between weekends.

cppwxwidgetsss wrote: I want to know if you all programmers agree with me With you? No. With the concept that I was barely able to determine within the horrible spelling and grammar? Yes. Of course .net and C# etc. hide a lot of stuff, that's the whole point. I've worked with both C# and C and there wasn't anything I did in C that couldn't have been done in C#. Others (including you) have had different experiences than I. "Use the right tool for the right job!" -- Scotty et al cppwxwidgetsss wrote: why all are talking about my style of writing or literature ? Because you need to communicate clearly first and foremost. What idea you have doesn't matter if you can't communicate it. Einstein could come to me in a dream and tell me how to achieve useful time travel, but if he's speaking German he's wasting his breath.

DateTime.AddXXX creates a new DateTime object with the added value. Use this: DateTime myDateTime = new DateTime(2007, 1, 1, 1, 1, 1); MessageBox.Show("before:" + myDateTime.ToString()); myDateTime = myDateTime.AddDays(6); myDateTime = myDateTime.AddYears(1); myDateTime = myDateTime.AddMonths(4); MessageBox.Show("after:" + myDateTime.ToString()); Cheers, Vıkram. Carpe Diem.

Hey, glad to help you man :) Yeah, I guess I got my answer mixed up though. Cheers, Vıkram. Carpe Diem.

Lots of material here... Windows Presentation Foundation[^] Mark Salsbery Microsoft MVP - Visual C++ :java:

I see nothing wrong in what you are doing. Its just that, when you use SetSystemTime(), the time set is UTC - not your local time. So, in order to set your local time, then you need to calculate the difference between your local timezone and UTC (use Offset class to calculate the difference like Offset diff = DataTime.Now - DateTime.UtcNow). Once you know the time difference, update the hours and minutes by the Offset.Hours, Offset.Minutes and you will get the correct local time set. Hope that helps!!

Luc Pattyn wrote: an app should not mess around with the system settings, such as Regional Settings, current date/time, etc. Hear hear!