X11lib Template

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <unistd.h>

void start_x(){
    Display *dis;
    Window win;
    GC gc;
};

void init_x(){
    //colors black and white
    unsigned log black,white;
    //display, X connection
    dis=XOpenDisplay((char *)0);
    screen=DefaultScreen(dis);
    black=BlackPixel(dis,screen); //get black color
    white=WhitePixel(dis,screen); //get white color
    //create window
    printf("Window, height & width: ");
    int height,width;
    scanf("%d %d",&height,&width);
    win=XCreateSimpleWindow(dis,DefaultRootWindow(dis),0,0,height,width,5,white,black);
    //Window Title
    XSetStandardProperties(dis,win,"X11 lib Template","Sup!",None,NULL,0,NULL);
    XSelectInput(dis,win,ExposureMake|ButtonPressMask|KeyPressMask);
    //create the Graphics Context
    gc=XCreateGC(dis,win,0,0);
    //Foreground Background
    XSetBackground(dis,gc,white);
    XSetForeground(dis,gc,black);
    //Clear window
    XClearWindow(dis,win);
    XMapRaised(dis,win);
};

void close_x(){
    XFreeGC(dis,gc);
    XDestroyWindow(dis,win);
    XCloseDisplay(dis);
    exit(1);
};

void redraw() {
        XClearWindow(dis, win);
};
int main(){
    init_x();

    while(1) {
                /* get the next event and stuff it into our event variable.
                   Note:  only events we set the mask for are detected!
                */
                XNextEvent(dis, &event);

                if (event.type==Expose && event.xexpose.count==0) {
                /* the window was exposed redraw it! */
                        redraw();
                }
                if (event.type==KeyPress&&
                    XLookupString(&event.xkey,text,255,&key,0)==1) {
                /* use the XLookupString routine to convert the invent
                   KeyPress data into regular text.  Weird but necessary...
                */
                        if (text[0]=='q') {
                                close_x();
                        }
                        printf("You pressed the %c key!\n",text[0]);
                }
                if (event.type==ButtonPress) {
                /* tell where the mouse Button was Pressed */
                        int x=event.xbutton.x,
                            y=event.xbutton.y;

                }
        }

    sleep(4);
    close_x();
    return 0;
}