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Very simple problem but I am too stupid :(

Posted on 1998-09-05
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Last Modified: 2010-04-30
******************************************
Declerations:
DIM Screen(20) as String

Private Sub Command1_Click()
For H = 1 To Picture1.Height - 15 Step 15
For W = 1 To Picture1.Width - 15 Step 15
Colorvalue$ = Right$("0000" + Hex$((Picture1.Point(W, H))), 6)
Blue = Val("&H" + Mid$(Colorvalue$, 1, 2))
L$ = L$ + Chr$(blau)
Next
Command2.Caption = Int((H / Picture1.Height) * 100) + "%"
Next
Screen(1) = "Hallo"
End Sub
***************
Why I get "Laufzeitfehler 13 - Typen unverträglich!" ???
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Question by:Okano
3 Comments
 
LVL 12

Accepted Solution

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mark2150 earned 50 total points
ID: 1433219
Blue = Val("&H" + Mid$(Colorvalue$, 1, 2))
    L$ = L$ + Chr$(blau)

The VAL statement cannot accept "&Hxxxx" as an arguement so BLUE is forever returning zero. CHR$() will generate an error when passed a zero.

I see it looks like you're trying to convert a hex string color value back into a numeric. Your approach will not work. Try:

MSN$ = ucase$( mid$( colorvalue$, 1, 1) )  ' Get MS digit
LSN$ = ucase$( mid$( colorvalue$, 2, 1) )  'Get LS digit
hx = "123456789ABCDEF" 'Position in string corresponds to hex value, zero not used
value = instr( hx$, msn$ ) * 16 + instr( hx$, lsn$ )   'Value will have decimal equiv of hex


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LVL 3

Expert Comment

by:a111a111a111
ID: 1433220

Command2.Caption = Int((H / Picture1.Height) * 100) & "%"

Not  100) + "%"

Give points to  mark2150 if answer is accepted
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Expert Comment

by:dbardi
ID: 1433221
Both '+' and '&' will work.
The norm is to use '&' to avoid confusion with numeric calculations.
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