Da 0wner
02-01-2009, 10:00 AM
Today we will be learning how to use TProgressBars.
First, create a form that looks like this:
http://img.techpowerup.org/090201/Capture026.jpg
Without the label at the bottom of course :p.
Then, put the below procedure above the InitForm; procedure.
procedure Increase(Sender : TObject);
begin
if x.Position < 110 // Where x is the name of the progress bar.
x.StepIt;
end;
After that, attach the procedure to run when the button is clicked. To do so put
x.OnClick := @y; // Where x is the name of the button and y is the name of the procedure.
below where it says
x.TabOrder := y; // Where x is the name of the button and y is the tab order. You don't have to do anything to that line.
Then run the form. It should work now and the progress bar should increase by 1/10 of it's size each time you click the button.
Now let's explain the variables of the progressbar and what they do.
x := TProgressBar.Create(y); // x is the name of the progress bar.
x.Parent := frmDesign // y is the name of the form it's on.
x.Left := 16; // z is the number the progressbar increases each time
x.Top := 32; // x.StepIt; is called.
x.Width := 169; // a is the minium number that the progressbar can go.
x.Height := 17; // b is the maximum number the progressbar can go.
x.TabOrder := 9; // When StepIt; is called and the position of the
x.Step := z; // progressbar is already at maximum it will go back to
x.Min := a; // the minimum.
x.Max := b;
There is also another way to step the progressbar.
x.StepBy(y); // where x is the name of the progressbar and y is the amount to step by.
Progressbars can be used to create cool things like download progress bars and are great when combined with TTimers.
Thank you for reading my tutorial.
I hoped you learned something from reading it!
Don't forget to rate the thread 5 stars and rep me if you liked it!
The script used is attached below.
First, create a form that looks like this:
http://img.techpowerup.org/090201/Capture026.jpg
Without the label at the bottom of course :p.
Then, put the below procedure above the InitForm; procedure.
procedure Increase(Sender : TObject);
begin
if x.Position < 110 // Where x is the name of the progress bar.
x.StepIt;
end;
After that, attach the procedure to run when the button is clicked. To do so put
x.OnClick := @y; // Where x is the name of the button and y is the name of the procedure.
below where it says
x.TabOrder := y; // Where x is the name of the button and y is the tab order. You don't have to do anything to that line.
Then run the form. It should work now and the progress bar should increase by 1/10 of it's size each time you click the button.
Now let's explain the variables of the progressbar and what they do.
x := TProgressBar.Create(y); // x is the name of the progress bar.
x.Parent := frmDesign // y is the name of the form it's on.
x.Left := 16; // z is the number the progressbar increases each time
x.Top := 32; // x.StepIt; is called.
x.Width := 169; // a is the minium number that the progressbar can go.
x.Height := 17; // b is the maximum number the progressbar can go.
x.TabOrder := 9; // When StepIt; is called and the position of the
x.Step := z; // progressbar is already at maximum it will go back to
x.Min := a; // the minimum.
x.Max := b;
There is also another way to step the progressbar.
x.StepBy(y); // where x is the name of the progressbar and y is the amount to step by.
Progressbars can be used to create cool things like download progress bars and are great when combined with TTimers.
Thank you for reading my tutorial.
I hoped you learned something from reading it!
Don't forget to rate the thread 5 stars and rep me if you liked it!
The script used is attached below.