Some basic questions on GUI

Hello. Actually I have many questions on GUI in matlab. Could you please help me? I had experienced MFC Windows Programming but GUI in matlab is very unfamiliar to me. My questions are as follows:

Q1. If I want to add other controls on GUI after I already made a GUI and revised the code, how can I just add some controls maintaining what I wrote before?

Q2. When I saved my GUI and the code of GUI is created, do I need like a main function to revise or it is okay to write codes in the code of GUI?

Q3. I'd like to update figure drawn by imshow function on GUI whenever I change a slider control and related variable. Is there any good example to practice this?

Your help in this would be greatly appreciated in advance. Thank you.

Answer 1

[Jan]

Q1. Simply add the new element and the corresponding callback. I do not see a reason for interferences.

Q2. This is not clear. It seems like you are using GUIDE to create the GUI. This is not required. GUIDE creates a FIG file, which is actually a MAT file which contains the data of the GUI elements, and an M-file, which contains the callback functions and the main function. You do not need further code to run a GUI.

Q3. http://www.mathworks.com/matlabcentral/fileexchange/24861-41-complete-gui-examples. Here you find all you need to create GUIs without GUIDE also.

[Song Lee]

Thank you for your answer! I will try what you explained.