Jump to content
Sign in to follow this  
roby

DLL C++ TO DLLCALL - I need help please

Recommended Posts

roby

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

Share this post


Link to post
Share on other sites
Richard Robertson

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 by Richard Robertson

Share this post


Link to post
Share on other sites
roby

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 by roby

Share this post


Link to post
Share on other sites
roby

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

Share this post


Link to post
Share on other sites

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 account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.