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Re: Where is Tk_GetDash documented?by rcseege (Pilgrim) |
on Nov 19, 2005 at 02:56 UTC ( [id://510023]=note: print w/replies, xml ) | Need Help?? |
I really hate to ask this, but did you miss the DASH PATTERNS section in the Canvas docs? I'll reproduce it here for speed:
DASH PATTERNSMany items support the notion of an dash pattern for outlines. The first possible syntax is a list of integers. Each element represents the number of pixels of a line segment. Only the odd segments are drawn using the ``outline'' color. The other segments are drawn transparant. The second possible syntax is a character list containing only 5 possible characters [.,-_ ]. The space can be used to enlarge the space between other line elements, and can not occur as the first position in the string. Some examples:
The main difference of this syntax with the previous is that it it shape-conserving. This means that all values in the dash list will be multiplied by the line width before display. This assures that ``.'' will always be displayed as a dot and ``-'' always as a dash regardless of the line width. On systems where only a limited set of dash patterns, the dash pattern will be displayed as the most close dash pattern that is available. For example, on Windows only the first 4 of the above examples are available. The last 2 examples will be displayed identically as the first one. Updated: Whoops! I should have read PerlBear's link a bit more closely...
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