Try to get Content of String of edit-box inside a KeyPressFcn without pressing return

2 次查看（过去 30 天）
Christian Schultes
Christian Schultes 2015-10-10
回答： Walter Roberson 2015-10-10
From style edit field make a Callback by KeyPressFcn. I try to read out the content of entire String. But I get an empty string back, until I press "return". Is there a way to get the String back without pressing return?
****
set(hObject, 'KeyPressFcn', {@edit_input_KeyPressFcn(hObject, eventdata, handles});
****
function edit_input_KeyPressFcn(hObject, eventdata, handles)
guidata(hObject, handles);
keyinput = eventdata.Key;
if strcmpi(keyinput, 'comma')
get_txt = get(hObject,'String');
set_txt = strrep(get_txt,',','.');
set(hObject,'String',set_txt);
end

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2015-10-10
No there is not. You will need to keep track of the characters yourself, or you will need to switch to a Java callback. The String property will not be updated until return is entered or another control gains focus.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Environment and Settings 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by