Hello every one; I have created a main UI having a popup menu that contains circle,Rectangle and Triangle.If user will clicks circle (then another ui will open,there user will enter the value of radius and this value will transfer to main ui) elseif user will click rectangle (then rectangle ui will open,there user will enter the value of length and breadth, and these values will come to the main ui) else if user will click Triangle (then triangle ui will open there user will enter the value of length and height, and these values will return to main ui),after this area and perimeter will be calculated and result will be displayed in main ui. I have written the following code for this but i am getting error message please any
But while running the code main UI is opening, after clicking popup menu (for example 1 i.e. circle) circle UI is opening and an error message is coming r=. it is not calculating area and perimeter. any one please suggest how to do it. sryfor bad english.Thanks in advance...