Chr$(60 And &HFF)

[petejk]

I dont understand what the "And" operator? does...

What is &HFF?
What do you think is its relevance as a parameter of Chr()




Thanks

 

[DaveSimmons]

HFF = 255

is the 60 fixed or a variable that happens to have value 60 in the debugger?

 

[Kermit]

&H prefix means the value is in hexadecimal. Hence the 255 value (15*16 + 15)
AND is boolean 'and' operator, if you and anything with &HFF, you get the lower 8 bits.
If you think VB is crap because of this, youshould see C.

 

[petejk]

i just replaced a variable with the value of 60

 

[DaveSimmons]

Then this limits the variable to the range 0-255, the valid numbers for chr$.

var foo = 257

not valid for chr$ !

var bar = foo And &HFF

now bar = 1, a safe value.

 

[petejk]

cool..thanks everyone

i'm on wikipedia reading up on hexadecimal now!!!!!