Issue with getrect and WindowKeyPressFcn

14 次查看（过去 30 天）

Uday 2017-8-26

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/354144-issue-with-getrect-and-windowkeypressfcn

Hi, I have a code which displays an image and allows user to draw rectangles using getrect function in an infinite loop. I also want to set the title of the figure interactively using key press. But getrect is blocking keyboard events and is not allowing WindowKeyPressFcn callback to execute. Any suggestions on how to enable keyboard events during getrect.

figure('WindowKeyPressFcn',@keypress_fun)
hold on 
imshow('peppers.png')
title('a')
while(1)
rect=getrect();
bbxmin=floor(rect(1));
bbymin=floor(rect(2));
bbwidth=floor(rect(3));
bbheight=floor(rect(4));
rectangle('Position', [bbxmin, bbymin, bbwidth, bbheight],'EdgeColor','g', 'LineWidth', 2)
end
function keypress_fun(src,eventdata)
title(eventdata.Key)
end