Starcraft
February 9th, 2000, 11:41 PM
what is the declarations for? i dont get it, i have only read one vb book.
|
Click to See Complete Forum and Search --> : General Declarations Starcraft February 9th, 2000, 11:41 PM what is the declarations for? i dont get it, i have only read one vb book. Cakkie February 10th, 2000, 12:17 AM The general declaration is used to declare variables who must be accessible from within the form/module it is in(DIM), or withing the entire project(PUBLIC). Like if you had this code: 'public declarations Dim s as Integer public sub Command1_Click() 'button 1 is pressed t = t + 1 msgbox t End Sub public sub Command2_Click() 'button 2 is pressed s = s + 1 msgbox s End Sub This would result in that when you press button 1, 1 is added to T, but because T isn't declared, it's value is cleared whenever the program leaves the sub, in this case after the messagebox. This results in t always being 1 when button 1 is clicked. However, pressing button 2 will result in 1 being added to s. The value of S will remain the same when the program exits the sub. So when it enters the sub for a second time, it's value will be 2. Tom Cannaerts slisse@planetinternet.be The best way to escape a problem, is to solve it. codeguru.com
Copyright Internet.com Inc., All Rights Reserved. |