fix:make zerocolor edge

3rdpart/OpenCV/include/opencv2/highgui.hpp

@@ -531,20 +531,16 @@ control panel.
 Clicking the label of each trackbar enables editing the trackbar values manually.
 
 @param trackbarname Name of the created trackbar.
-@param winname Name of the window that will contain the trackbar.
-@param value Pointer to the integer value that will be changed by the trackbar.
-Pass `nullptr` if the value pointer is not used. In this case, manually handle
-the trackbar position in the callback function.
-@param count Maximum position of the trackbar.
-@param onChange Pointer to the function to be called every time the slider changes position.
-This function should have the prototype void Foo(int, void\*);, where the first parameter is
-the trackbar position, and the second parameter is the user data (see the next parameter).
-If the callback is a nullptr, no callbacks are called, but the trackbar's value will still be
-updated automatically.
-@param userdata Optional user data that is passed to the callback.
-@note If the `value` pointer is `nullptr`, the trackbar position must be manually managed.
-Call the callback function manually with the desired initial value to avoid runtime warnings.
-@see \ref tutorial_trackbar
+@param winname Name of the window that will be used as a parent of the created trackbar.
+@param value Optional pointer to an integer variable whose value reflects the position of the
+slider. Upon creation, the slider position is defined by this variable.
+@param count Maximal position of the slider. The minimal position is always 0.
+@param onChange Pointer to the function to be called every time the slider changes position. This
+function should be prototyped as void Foo(int,void\*); , where the first parameter is the trackbar
+position and the second parameter is the user data (see the next parameter). If the callback is
+the NULL pointer, no callbacks are called, but only value is updated.
+@param userdata User data that is passed as is to the callback. It can be used to handle trackbar
+events without using global variables.
  */
 CV_EXPORTS int createTrackbar(const String& trackbarname, const String& winname,
                               int* value, int count,