thanks for help. and I know basic info about threading and serial port. but the main problem is in my project computer has to recieve signals from device in continous manner. Its like embedded tech. so new for that. thats why confused. cant find your email link so have to put on general blog. if you dont mind give me your email id so i can send you my problem. but thanks a lot.

means? I didnt understand what kind of details you want? Actually I am going to use this programming for commericial use. In my project there is a need to develope this. the requirment is computer has to recieve signals from another device which is not computer but its a kind of detector. and whatever signals it sends computer has to recieve it. still if you have confusion then let me know I'll explain you. If you are availabe for chat then we discuss about it more clearly. but thanks a lot for help.

hey need help for serial port. please give me your email addres or something so i can send info about it. please. thanks

I know that I asked same question that before 3 months ago but I tried to implement for it but still facing problem and dont know the solution. let me explain from scratch so you will have some idea about it. 1) My allication has to intract with another device and this device cannot be modified. Its kind of embedded tech. means whaterver signal the device can send that computer has to recieve it and in some cases computer has to send some instruction to control the device.(in the case when the device generates signals and if it goes beyong some set points then computer has to control it. its kind of two way communication). 2) its in format of binary of ascii value. 3) there is no minimum or maximum length. its continous 4)probably its real-time. I dont have enough background info about this and I am only in this project so cant get help from other and never work any this kind of project in past.so please give me a proper guidence for it. thank you so much for intrest in this topic. thanks.

I have to do SerialPort communication that constantly needs to read data from a serial interface (for example COM1). and also identify the strating of first message and ending of that message and also starting of second message. please give me reply ASAP becuase I really stuck in that.

thanks for replying me hey you said you do lot of RS232 programming. can you teach me that because I am new in RS232 programming with multithreading and i have to do it in time so I dont have enough time but I will manage if you are ready to teach me. I really appriciate for that. I am waiting for your reply. thanks.