Use ActionPostCallback on zoom object causing IuserException.

3 次查看（过去 30 天）
Tobias Stängle
Tobias Stängle 2020-10-19
编辑： Mario Malic 2020-10-19
I am currently trying to write a script which executes a function on zoom. This is just a simple test from me.
mapFigure = figure();
plot(x,y);
zoomObj = zoom(mapFigure);
zoomObj.ActionPostCallback = @(zoomObject, evd) newRenderImage(zoombOject,evd);
zoomObj.Enable = 'on';
And I call this from an livescript
myFig = getMyFigure(x,y);
This is the error it produces
Error in matlab.ui.internal.componentframework.WebControllerFactory/create (line 92)
checkPreconditions( obj, component, parentController, nargin );]
MathWorks::System::IUserException [Error using matlab.ui.internal.componentframework.WebControllerFactory/checkPreconditions (line 45)
Invalid superclass name.
Anyone has a workaround for this problem?

请先登录，再回答此问题。

回答（1 个）

Mario Malic
Mario Malic 2020-10-19
Morning,
Looks like issue might be with this letter
@(zoomObject, evd) newRenderImage(zoombOject,evd);
% ^
  2 个评论
Tobias Stängle
Tobias Stängle 2020-10-19
If i try it in a normal matlab scrip it works. Trying it in a live script cauises this error:
Error in matlab.ui.internal.componentframework.WebControllerFactory/create (line 92)
checkPreconditions( obj, component, parentController, nargin );]
MathWorks::System::IUserException [Error using matlab.ui.internal.componentframework.WebControllerFactory/checkPreconditions (line 45)
Invalid superclass name.
Mario Malic
Mario Malic 2020-10-19
编辑：Mario Malic 2020-10-19
Documentation of
doc matlab.ui.internal.componentframework.WebControllerFactory/Create
Number of input arguments to the "createController" function is 3.
I would suggest to go into debugging mode and see the differences between the livescript and script, so you can check the issue yourself. There might be some unexpected differences between the two. I haven't used livescript so can't really address the issue.
One of these probably cause the issue: obj, component, parentController. Probably the last one.
Hint on the
zoomObj.ActionPostCallback = @(zoomObject, evd) newRenderImage(zoombOject,evd);
You should check how the original ActionPostCallback works. Your anonymous function might not have access to usual

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Function Handles 的更多信息

标签

产品


版本

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by