if statement asking if an addlistener() event has occured

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Adam Kaas 2012-5-21

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采纳的回答： Sean de Wolski

Is there a way to write an if statement that says something like:

if % addlistener(handles.Edit1, 'String','PostGet',f) occured %do something end

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Sean de Wolski 2012-5-21

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I don't really understand why you would want to do this. The purpose of the listener is to fire when something (some event) happens. Why then do you need an if()? When this something happens, the listener will fire and your if() will happen automagically.

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Adam Kaas 2012-5-21

Tried messing around with this for awhile. I'm sure it's a simple fix but I'm not seeing it. I attempted to do what you had suggested and maybe you can tell me what I did wrong Sean. Here's my code:

function ManualAndEnable(~,~)

set(handles.Profile,'Value',1);

set(handles.RelativePower1, 'Enable', 'on');

set(handles.RelativePower2, 'Enable', 'on');

set(handles.RelativePower3, 'Enable', 'on');

set(handles.RelativePower4, 'Enable', 'on');

set(handles.DelayProfileShape1, 'Enable', 'on');

set(handles.DelayProfileShape2, 'Enable', 'on');

set(handles.DelayProfileShape3, 'Enable', 'on');

set(handles.DelayProfileShape4, 'Enable', 'on');

set(handles.DopplerSpread1, 'Enable', 'on');

set(handles.DopplerSpread2, 'Enable', 'on');

set(handles.DopplerSpread3, 'Enable', 'on');

set(handles.DopplerSpread4, 'Enable', 'on');

set(handles.DopplerShift1, 'Enable', 'on');

set(handles.DopplerShift2, 'Enable', 'on');

set(handles.DopplerShift3, 'Enable', 'on');

set(handles.DopplerShift4, 'Enable', 'on');

set(handles.DopplerShiftDelay1, 'Enable', 'on');

set(handles.DopplerShiftDelay2, 'Enable', 'on');

set(handles.DopplerShiftDelay3, 'Enable', 'on');

set(handles.DopplerShiftDelay4, 'Enable', 'on');

set(handles.FilterOrder1, 'Enable', 'on');

set(handles.FilterOrder2, 'Enable', 'on');

set(handles.FilterOrder3, 'Enable', 'on');

set(handles.FilterOrder4, 'Enable', 'on');

set(handles.RelativeDelay2, 'Enable', 'on');

set(handles.RelativeDelay3, 'Enable', 'on');

set(handles.RelativeDelay4, 'Enable', 'on');

set(handles.DelaySpread_us1, 'Enable', 'on');

set(handles.DelaySpread_us2, 'Enable', 'on');

set(handles.DelaySpread_us3, 'Enable', 'on');

set(handles.DelaySpread_us4, 'Enable', 'on');

set(handles.DelayPeak_us1, 'Enable', 'on')

set(handles.DelayPeak_us2, 'Enable', 'on');

set(handles.DelayPeak_us3, 'Enable', 'on');

set(handles.DelayPeak_us4, 'Enable', 'on');

set(handles.EnableButton2, 'Value', 0);

set(handles.EnableButton3, 'Value', 0);

set(handles.EnableButton4, 'Value', 0);

Getting an error for each line that all states:

Undefined variable "handles" or class "handles.Profile".

Error in channel_model_gui>ManualAndEnable (line 193)

set(handles.Profile,'Value',1);

Warning: Error occurred while evaluating listener callback.

> In openfig at 135

In gui_mainfcn>local_openfig at 286

In gui_mainfcn at 234

In channel_model_gui at 42

Undefined variable "handles" or class "handles.Profile".

Walter Roberson 2012-5-22

Your handles must have been associated with a different figure number I guess.

Sean de Wolski 2012-5-22

or improperly GUIDATAed (new verb!). That is why I avoid GUIDATA like the plague.

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