Thread: event monitoring

Doesn't sound too kosher.

Off to the Windows forum...

>>> Currently the application is setup to run a loop over and over, monitoring for a keystroke or a mouseclick.

I'm not totally sure what you are doing, because you have not really answered the question about GUI/Console. The answer would depend upon that, both are quite straight forward.

In a GUI, Just put appropriate handlers for the generated messages in your Windows processing loop.

In a Console, use keyboard and mouse events, read part 5 of my tutorial. The first program demonstrates blocking loops.

Originally posted by adrianxw
read part 5 of my tutorial.

Nice work, Adrian!

You don't say which program you are using, so I'll use the first as an example. I started a new console project in VC and added the source file with a .c extension rather than .cpp.

To get it to compile, I had to change the "cout" statements to printf() function calls. I had to comment out the iostream include and the namespace directive, and include <stdio.h>, then I had to change the type "bool" to "boolean" It then compiled and ran.

Code:

#include <windows.h>
#include <stdio.h> 
//#include <iostream>
//using namespace std;

int main()
{
    HANDLE hIn;
    HANDLE hOut;
    COORD KeyWhere;
    COORD MouseWhere;
    COORD EndWhere;
    boolean Continue = TRUE;
    int KeyEvents = 0;
    int MouseEvents = 0;
    INPUT_RECORD InRec;
    DWORD NumRead;

    hIn = GetStdHandle(STD_INPUT_HANDLE);
    hOut = GetStdHandle(STD_OUTPUT_HANDLE);

//    cout << "Key Events   : " << endl;
//    cout << "Mouse Events : " << flush;
    printf("Key Events   : \n");
    printf("Mouse Events : ");

    KeyWhere.X = 15;
    KeyWhere.Y = 0;
    MouseWhere.X = 15;
    MouseWhere.Y = 1;
    EndWhere.X = 0;
    EndWhere.Y = 3;

    while (Continue)
    {
        ReadConsoleInput(hIn,
                         &InRec,
                         1,
                         &NumRead);

        switch (InRec.EventType)
        {
        case KEY_EVENT:
            ++KeyEvents;
            SetConsoleCursorPosition(hOut,
                                     KeyWhere);
//            cout << KeyEvents << flush;
            printf("%d",KeyEvents);
            if (InRec.Event.KeyEvent.uChar.AsciiChar == 'x')
            {
                SetConsoleCursorPosition(hOut,
                                         EndWhere);
//                cout << "Exiting..." << endl;
                printf("Exiting...\n");
                Continue = FALSE;
            }
            break;

        case MOUSE_EVENT:
            ++MouseEvents;
            SetConsoleCursorPosition(hOut,
                                     MouseWhere);
//            cout << MouseEvents << flush;
            printf("%d",MouseEvents);
            break;
        }
    }

    return 0;
}

If that doesn't work, I'll need to know where it is failing and what error message you are getting.

Originally posted by gvector1
Adrianxw,

Thanks so much for the reply and the link to your tutorial. That is some very interesting stuff. It works great in DevC++ as a C++ project. If I try to compile it as a C project, I get a list of errors. Dev's error messages could not be any more vague. What changes when trying to compile as a C project and a C++ project????? How would I get that stuff to work as a C project? Ideally, my administrator wants to implement this into a DJGPP application.

For heaven's sake, why DJGPP? Is there even a version that compiles for Windows? DJGPP is basically a DOS Protected Mode compiler.

I've never used DJGPP. What errors are you getting on what lines?

***EDIT***

Is the default "int" in DJGPP 16 or 32bit?