command button problem

hi i am very beginner... i started vb just...i created a command button. and then changed its name(caption) to cmdRoy. then i double clicked on that and got the coding window. there i wrote
simply

Private Sub Command2_Click()
cmdRoy.Caption = " Click "
End Sub

then i run this program......but getting error " object required...
run time error '424' ....i dont understand this error. how can i fix it.

i am studying the tutorial from this site

http://www.developer.com/net/vb/art...10926_1538771_4


i want to ask one more question..
i found use of uppercase and lowercase letters in the variable. is there any rule / syntax for that???

e.g frmTest.BackColor = vbGreen

capital and small letter mixed!!!!!!.... how to remember this???

thanks

OK.. to clarify a few points for you, the caption property of a command button or any other control on a form has nothing to do with the identification of that control, for that, you have to change the (Name) property at the top of the form. If you'll look at your sub-procedure heading, you'll notice that it's still called Command2_Click - this is because the name of your button is Command2. You are getting the error because you are trying to call the caption method of a button that doesn't exist (there is no button on your form called cmdRoy) To rectify this situation, change either the name of the command button in the properties window to cmdRoy, or change the reference in your procedure to Command2.

Second - case doesn't matter in VB. VB's intellisense takes care of case issues. It is not as picky as other OO languages like C++ and JAVA. You can test this by typing in the following declarations in a subprocedure in your program.

You should notice that when you hit enter after the intcounter=0 that the case will change to that of the variable declaration.

Good Luck

as a side note - it is often considered to be good practice to dimension your variables with mixed case, such as


This gives you a way to check your variable declarations as your typing - since after you type "intmyinteger" in lowercase and hit <ENTER>, VB6 will change it to the proper case of the variable declaration.

Hi,intelchip!It's a obvious mistake!
cmdboy doesn't exist in your form!It cause the error you get!