Event Types
| Event Category | Event Type |
|---|---|
| Keyboard events 键盘事件 | KeyPress KeyRelease |
| Pointer events 鼠标事件 | ButtonPress ButtonRelease MotionNotify(运动事件) |
| Window crossing events 窗体进入离开事件 | EnterNotify LeaveNotify |
| Input focus events | FocusIn FocusOut |
| Keymap state notification event | KeymapNotify |
| Exposure events | Expose GraphicsExpose NoExpose |
| Structure control events | CirculateRequest ConfigureRequest MapRequest ResizeRequest |
| Window state notification events | CirculateNotify ConfigureNotify CreateNotify DestroyNotify GravityNotify MapNotify MappingNotify ReparentNotify UnmapNotify VisibilityNotify |
| Colormap State Change Events | ColormapNotify |
| Client Communication Events | ClientMessage PropertyNotify SelectionClear SelectionNotify SelectionRequest |
下面我们详细测试解释
主体结构
#include <stdio.h>
#include <X11/Xlib.h>
static Display *dpy;
static int screen;
static int sw, sh;
static Window root;
static int running = 1;
typedef void (*handler)(XEvent *);
static void *handlers[LASTEvent];
void default_handler(XEvent *ev)
{
printf("default event handler: ev.type = %d\n", ev->type);
return;
}
// ======代码1=============
void xxxx(XEvent *ev)
{
}
// =======================
void init()
{
dpy = XOpenDisplay(NULL);
XSetWindowAttributes wa;
screen = DefaultScreen(dpy);
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
root = RootWindow(dpy, screen);
// ======代码2=============
wa.event_mask = Mask;
// =======================
XChangeWindowAttributes(dpy, root, CWEventMask, &wa);
XSelectInput(dpy, root, wa.event_mask);
for (int i = 0; i < LASTEvent; i++)
{
handlers[i] = default_handler;
}
// ======代码3=============
handlers[XXXX] = xxxx;
// =======================
}
void run()
{
XEvent ev;
XSync(dpy, False);
while (running && !XNextEvent(dpy, &ev))
{
handler caller = handlers[ev.type];
if (caller != NULL)
{
caller(&ev);
}
}
}
int main()
{
init();
run();
}event_test: event_test.c
gcc event_test.c -o event_test -lX11启动Xephyr，同时启动event_test测试。