Photoshop 7.0 Scripting Guide
18
Scripting basics
Commands and methods
2
VB
Private Sub Command1_Click()
Dim documentCount As long
Dim appRef As New Photoshop.Application
documentCount = appRef.Documents.Count
If documentCount = 0 Then
MsgBox "No Photoshop documents are open!"
End If
End Sub
JS
var documentCount = documents.length;
if (documentCount == 0)
{
alert("There are no Photoshop documents open");
}
2.7.2 Control structures
Control structures provide for repetitive processes, or “loops.” The idea of a loop is to repeat
some action, with or without changes each time through the loop, until a condition is met.
Both AppleScript and Visual Basic have a variety of different control structures to choose
from. The simplest form of a loop is one that repeats a series of script operations a set number
of times.
AS
repeat with counter from 1 to 3
display dialog counter
end repeat
VB
For counter = 1 to 3
MsgBox counter
Next
JS
for (i = 1; i < 4; ++i)
{
alert(i);
}