roby Posted October 29, 2007 Share Posted October 29, 2007 Hi, I have a little problem, big for me... I write a dll for serial comunication. The function below, receive the characters from rsr232 and function, but the value don't pass to dllCall().. WHY??? Where do I mistake?? extern "C" __declspec(dllexport) char GetByte() { char rxchar; BOOL bReadRC; static DWORD iBytesRead; bReadRC = ReadFile(hCom, &rxchar, 1, &iBytesRead, NULL); if (bReadRC) { if (rxchar.GetByte(1) != NULL) { return rxchar; } } // return 0 if no character read } This is syntax of dllCall: $byteTmp = DllCall('commg.dll','str:cdecl','GetByte') Is it good? Thank you Regards Roby Link to comment Share on other sites More sharing options...
Richard Robertson Posted October 29, 2007 Share Posted October 29, 2007 (edited) Remember, DllCall passes an array. In the help file, it tells you about this return value. Also, are you sure the C++ you posted even works? I don't understand you calling GetByte(1) on the char type. I didn't think it had any members. Edited October 29, 2007 by Richard Robertson Link to comment Share on other sites More sharing options...
roby Posted October 29, 2007 Author Share Posted October 29, 2007 (edited) Remember, DllCall passes an array. In the help file, it tells you about this return value.Also, are you sure the C++ you posted even works? I don't understand you calling GetByte(1) on the char type. I didn't think it had any members.I apologize.I posted my test... Please, tell me a right way, if you know it.My problem is pass a char to dllCall.. In dllCall the type is : str:cdecl ???tank you Edited October 29, 2007 by roby Link to comment Share on other sites More sharing options...
Administrators Jon Posted October 29, 2007 Administrators Share Posted October 29, 2007 A single char will be the ubyte type. Deployment Blog: https://www.autoitconsulting.com/site/blog/ SCCM SDK Programming: https://www.autoitconsulting.com/site/sccm-sdk/ Link to comment Share on other sites More sharing options...
roby Posted October 29, 2007 Author Share Posted October 29, 2007 Hi Jon, many compliments for your work AUTOIT.... Please, have you a example for my problem.. All my tests, dont' work.. I need help, please. I don't know to do.. I am not a c++ programmer.. Tank you Roby Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now