function browse_Callback(hObject, event, handles)
[chosenfile, chosenpath] = uigetfile('*.avi', 'Select a video');
if ~ischar(chosenfile)
return; %user canceled dialog
end
filename = fullfile(chosenpath, chosenfile);
set(handles.edit1, filename);
function play_Callback(hobject, event, handles)
filename = get(handles.edit1, filename);
if ~exist(filename, 'file')
warndlg( 'Text in edit box is not the name of a file');
return
end
try
obj = VideoReader(filename);
catch
warndlg( 'File named in edit box does not appear to be a usable movie file');
return
end
ax = handles.ax1;
while hasFrame(obj)
vidFrame = readFrame(obj);
image(vidFrame, 'Parent', ax);
set(ax, 'Visible', 'off');
pause(1/obj.FrameRate);
end
clear obj
Notice, though, that this code displays in an axes, not in a static text. A static text box cannot hold graphics. If there was some deep reason why you needed the video displayed on a uicontrol then you would use a uicontrol('style', 'push', 'enable', 'off') and update its Cdata property with the contents of the frame -- but that would seldom be better than displaying it in an axes.
I would also suggest to you that it would be better if considered making that edit box into a static text box. When you have it as an edit box then the user might edit the string, which is why it is necessary to validate that the string still designates a file. If you make it a static text box then the only way for the user to put something in there is by the Browse button, so you could be sure that it was a file named.
You should be careful, though: when you allow the user to browse to arbitrary locations, the complete pathname to the file (which is what you write in the edit box) might not fit within the space you allocate. Edit boxes do at least allow the user to position within the text if they want to see it all, but the default is at the beginning, which is the directory part rather than the file name part. Static text boxes attempt to "wrap" the text to multiple lines if the box is not wide enough for all if it; that is not going to be very successful if the name is too long for the area you give.
