Hi there
I'm trying to build a GUI. For simplicity on the forum, I've built a
really simple example of what I'm trying to do. How can I make the
"conditional" GUI output work and not have it inside the calc function?
... or, how would you do it? Thanks.
Best regards, Claus.
// GUI_EXAMPLE.SCE
//
// Demo of how to build a simple GUI in Scilab.
// Real simple, with two input variables and one output.
// The example uses the basic mechanical example of a mass and a spring as
// input parameters and calculates the resonance frequency of the mechanical
// system.
// Initialize variables
m = 1; // Moving mass 'm'(kilogram)
k = 1; // Stiffness, spring constant 'k'(Newton per meter)
fres = 1; // Resonance frequency (Hertz)
show_result = %f;
function calc()
m = evstr(get(ge_m,"string")); // get content in uicontrol ge_m
k = evstr(get(ge_k,"string")); // get content in uicontrol ge_k
fres = sqrt(m * k);
// putting GUI updates inside the calculation routine is not pretty code.
uicontrol("style","text","string","Result :","position", ..
[10 as(2)-110 80 20]);
uicontrol("style","text","string",string(fres), ..
"position",[100 as(2)-110 80 20]);
uicontrol("style","text","string","Hz ","position", ..
[200 as(2)-110 30 20]);
show_result = %t;
// update global variables
[m,k,fres,show_result]=return(m,k,fres,show_result);
endfunction
function goodbye()
close(ge); // Close GUI window
printf("Resulting fres: %f Hertz\n",fres);
abort // Print result in console (e.g. for copy/paste), then kill the app
endfunction
ge = scf(); // GUI Example, Initialize and 'set current figure'
as = ge.axes_size; // read size of window, as = [width height]
ge.figure_name = "GUI Example"; // Change window header
uicontrol("style","text","string","Moving mass :","position", ..
[10 as(2)-35 80 20],"background",[1 1 1]); // white background
// position properties has four parameters = x,y,width,height
// y-position counts from lower left corner, so we subtract from 'as'
ge_m = uicontrol("style","edit","string",string(m), ..
"position",[100 as(2)-35 80 20]);
uicontrol("style","text","string","kg ","position", ..
[200 as(2)-35 30 20],"background",[1 1 1]);
uicontrol("style","text","string","Stiffness :","position", ..
[10 as(2)-60 80 20],"background",[1 1 1]);
ge_k = uicontrol("style","edit","string",string(k), ..
"position",[100 as(2)-60 80 20]);
uicontrol("style","text","string","N/m ","position", ..
[200 as(2)-60 30 20],"background",[1 1 1]);
uicontrol("style","pushbutton","string","Calculate", ..
"position",[10 as(2)-85 80 20],"callback","calc");
// How do I make this "conditional"output show up in my GUI?
if show_result then // If "Calculate"button was pushed at least once ...
uicontrol("style","text","string","Result :","position", ..
[10 as(2)-110 80 20]);
uicontrol("style","text","string",string(fres), ..
"position",[100 as(2)-110 80 20]);
uicontrol("style","text","string","Hz ","position", ..
[200 as(2)-110 30 20]);
end
uicontrol("style","pushbutton","string","Exit", ..
"position",[10 as(2)-135 80 20],"callback","goodbye");
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