扫描窗口管理器启动时需要管理的窗口

src/include/xcb.h

@@ -2,6 +2,9 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include <xcb/xproto.h>
+
+bool has_other_wm_running(void);
 
 typedef struct monitor_rect_t monitor_rect_t;
 struct monitor_rect_t {
@@ -11,6 +14,11 @@ struct monitor_rect_t {
   uint32_t height;
   monitor_rect_t *next;
 };
-
-bool has_other_wm_running(void);
 monitor_rect_t *detect_monitor_rect(void);
+
+typedef struct window_list_t {
+  uint32_t count;
+  xcb_window_t *list;
+} window_list_t;
+window_list_t *scan_window_list(void);
+void free_window_list(window_list_t *window_list);