Parameter 1 is not a number

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Kacper Gawinkowski 2019-8-22

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https://ww2.mathworks.cn/matlabcentral/answers/477208-parameter-1-is-not-a-number

评论： Kacper Gawinkowski 2019-8-22

Hi, ive got a problem with making my app to operate microscope. I try to change the mode in a SetFrameTransferMode function with a simple checkbox that returns the value (0 or 1), but i get an error saying "Parameter 1 is not a number". Here is part of the code, thanks for help in advance.

In properties i have:

FrameTransfer = 0

then there is a check box function:

        function FrameTransferCheckBoxValueChanged(app, event)
            value = app.FrameTransferCheckBox.Value;
            app.FrameTransfer=value;
        end

and the part where error apears

            [ret]=SetFrameTransferMode(app.FrameTransfer);
            CheckWarning(ret);

Here is explanation of how this funcion works, from the Software Dev Kit

unsigned int WINAPI SetFrameTransferMode(int mode)
%Description: This function  will set whether  an  acquisition  will readout in Frame Transfer  Mode. 
%Parameters: int mode: mode
                    % 0  OFF
                    % 1  ON

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Guillaume 2019-8-22

Can we have the full text of the error message (everything in red)?

Also, it's not clear where the SetFrameTransferMode function come from? is this a m or mex file provided by the microscope manufacturer, possibly a wrapper for their dll? Clearly, you're not calling directy that C function definition you show (as you'd be using calllib for that).

Kacper Gawinkowski 2019-8-22

在 MATLAB Online 中打开

SetFrameTransferMode comes from m file provided by microscope manufacturer.Here is full error message

Error using atmcdmex
SetFrameTransferMode- parameter 1 is not a number
Error in SetFrameTransferMode (line 17)
[ret] = atmcdmex('SetFrameTransferMode', mode);

Also i have no idea what a dll wrapper ism sorry.

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