How can I share data in nested functions of a GUI?

1 次查看(过去 30 天)
Hello, I'm not able to share data among nested functions of a GUI using the figure handle, namely the number of clicks on a figure. I'm able to do it only using a global variable. How could I use the handle instead of the global variable? Many thanks! This is my code:
I first define the global variable and then run the function in the workspace:
>>global globalVar >>h = shareData
Then here are the nested functions:
function handle=shareData() fprintf('Starting GUI\n') handle.fig = figure(); global globalVar; globalVar.Nclicks=0; handle.Nclicks=0; fprintf('Before set\n') globalVar handle set(handle.fig,'WindowButtonDownFcn',{@clickPosition,handle})
function handle=clickPosition(hObject, eventdata, handle) global globalVar; get(handle.fig,'CurrentPoint'); globalVar.Nclicks=globalVar.Nclicks+1; handle.Nclicks=handle.Nclicks+1; if globalVar.Nclicks==1 fprintf('After 1 click\n') else fprintf(['After ' , num2str(globalVar.Nclicks), ' clicks\n']) end globalVar handle
  1 个评论
Jan
Jan 2013-9-11
Please follow the "? Help" link to learn how to format code in the forum. Thanks!

请先登录,再进行评论。

回答(2 个)

Jan
Jan 2013-9-11
There are many many threads concerning sharing data between functions of a GUI in this forum. Therefore I suggest to search for "share data gui":
  2 个评论
Mario
Mario 2013-9-11
I should have missed these post before. I'm using the "evalin" and "assignin" functions. Thanks a lot!
Jan
Jan 2013-9-12
EVALIN and ASSIGNIN are a kind of remote control. It is much harder to keep the overview with them and debugging gets extremely hard, because it cannot determined directly, which line of code is responsible for the last changes.

请先登录,再进行评论。


Arthur
Arthur 2013-9-11
evalin and assignin are generally speaking not great ways to do this. Have a look at getappdata & setappdata. Have a look at this video:

类别

Help CenterFile Exchange 中查找有关 Migrate GUIDE Apps 的更多信息

Community Treasure Hunt

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

Start Hunting!

Translated by