how to use mouse in C graphics programming...

bastin_gh · 07-13-2005, 03:33 AM

hi.. i have done many graphics programs in C using the Turbo C editor.. but till now, i haven't used mouse in my programs. how do we use the mouse. if possible, please have a sample program to explain the procedure for using the mouse.....

meDream · 07-13-2005, 08:55 AM

if you use SDL library then it is easy!!
just look the following link
ftp://ptah.lnf.kth.se/pub/misc/sdl-env-vars

anyway you'll find a lot of stuff with googling around

keefaz · 07-13-2005, 09:12 AM

Is it for use with X ?

If yes, this is an example to move the x pointer :

Code:

#include <X11/Xlib.h>
#include <stdio.h>

int main(int argc, char * argv[]) {
    Display *display;
    Window root;

    display = XOpenDisplay(NULL);

    if(display == 0) {
        printf("Could not open default display\n");
        return 1;
    }

    root = DefaultRootWindow(display);

    /* move the pointer to (250, 250) */
    XWarpPointer(display, None, root, None, None, None, None, 250, 250);

    XCloseDisplay(display);
    return 0;
}

If you saved it as mouse.c, compile with :
gcc -o mouse mouse.c -L/usr/X11R6/lib -lX11 -lXtst

vharishankar · 07-13-2005, 09:28 AM

Turbo C/C++? My guess is the OP is programming in MS-DOS.

paulsm4 · 07-13-2005, 11:00 AM

Hi, bastin_gh -

How to use the mouse depends on:

1. What OS you're running (using the "system pointer" in a graphical environment like MS-Windows or the Linux GUI is light years away from doing serial I/O with "mouse input" under DOS)

2. Your choice of language and programming library (C? C++? Python? Java?)

Since you're probably running under some kind of GUI (either Linux or Windows), and since it doesn't sound like programming language is too much of an issue, you might want to consider learning Java (which has GUI libraries - including mouse support - built in).

IMHO .. Paul Santa Maria

deiussum · 07-13-2005, 11:47 AM

PUT DOWN THE TC++ COMPILER, AND BACK AWAY!!!

Seriously, you should consider checking out one of the many free compilers available. TC++ not only creates binaries for an outdated OS (DOS), but it is not very ANSI compliant as it has been around long before the days of the final ANSI/ISO standards were put in place.

If switching compilers isn't an option... Well, I seem to remember needing to do some interrupt work to interact with the mouse drivers in TC++. Since you are probably running it with DOS emulation under XP or something of the sort, I'm not sure how well that works anymore.