command window refresh in R015b

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Joris Gillis
Joris Gillis 2016-3-30
评论： adams13 2024-3-27
Dear all,
For our numerical software, we've coupled a C++ library with MATLAB. Every few seconds, that library has some useful output, that we send to the command window (mexPrintf).
We've come to rely on calling drawnow('update') after every print to make sure that the output of the library streams live, line-by-line, into the command window, instead of being buffered (appearing in chunks of a good number of lines at a time).
Now, a user of our software reports that this mechanism stopped working between R2015a, and R2015b. I've checked the release notes but could not find a clue that would explain this.
Any hints for me?
Best regards, Joris Gillis

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Walter Roberson
Walter Roberson 2016-3-30

更多回答（1 个）

Jan
Jan 2016-3-30
A workaround is calling an M-helper function: http://www.mathworks.com/matlabcentral/answers/255615#answer_215636
  2 个评论
Joris Gillis
Joris Gillis 2016-3-30
编辑：Joris Gillis 2016-3-30
Hi Jan, in that answer you talk about 'java methods'. Does this mean you already explored the following unexposed-feature route?
desktop = com.mathworks.mde.desk.MLDesktop.getInstance;
cmdwin = desktop.getClient('Command Window');
xwin = cmdwin.getComponent(0).getViewport.getComponent(0);
xwin.repaint
Best, Joris
Disclaimer: I'm on R204b myself, so I can only trust the gurus on their word..
adams13
adams13 2024-3-27
Thank you for a nice solution, it works also in 2023. Redraw only the command window is definitely better than all figures with 'drawnow'. However, Matlab R2023b says
'com.mathworks' package and subpackages will be removed in a future release. There is no simple replacement for this.
Any solution for a current version?

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