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dlu_y
2009 Mar 09
1
Dialog base units implementation question
...ow if it is a bug or a "behaviour"
CreateDialog, MapDialogRect and many api uses the dialog box base units to convert from dialog units to pixels.
Seeing the implementation in wine and the results that real Windows o.s. do I think that instead of using these formulas:
pixels_x = MulDiv(dlu_x, xBaseUnit, 4);
pixels_y = MulDiv(dlu_y, yBaseUnit, 8);
i get best results converting values to floating points and then rounding the result:
pixels_x = (int)(((double)dlu_x * (double)xBaseUnit / 4.0) + 0.5);
pixels_y = (int)(((double)dlu_y * (double)yBaseUnit / 8.0) + 0.5);
If anyone can confir...