yushuailong commented on code in PR #17186:
URL: https://github.com/apache/nuttx/pull/17186#discussion_r2428025702


##########
include/nuttx/video/fb.h:
##########
@@ -321,6 +321,9 @@
 #define FBIOGET_FSCREENINFO   _FBIOC(0x001c)  /* Get video fix info */
                                               /* Argument: writable struct
                                                *           fb_fix_screeninfo */
+#define FBIOGET_PANINFOCNT    _FBIOC(0x001d)  /* Get pan info count */
+                                              /* Argument: read-only
+                                               *           unsigned long */

Review Comment:
   Hi, It has the same parameters as FBIOPAN_CLEAR, and both should pass in the 
overlay index. I refer to this , so I use unsigned long
   
https://github.com/apache/nuttx/blob/4057d86e2b68128e81fa9bc65ba1e4131c1c021f/include/nuttx/video/fb.h#L309-L311



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