PB窗口中，一个长宽单位等于多少毫米，A3折成PB的单位是多少

[whitegourd]

PB窗口中，一个长宽单位等于多少毫米，A3折成PB的单位是多少

[whitegourd]

窗口宽度用UnitsToPixels()转成像素，1cm=37.9像素，不知对否
A3=297*420毫米

[killerdanny]

The size of PowerBuilder units (PBUs) is defined in terms of logical inches instead of as a fraction of the size of the system font. The size of a logical inch is defined by your operating system as a specific number of pixels. The number is dependent on the display device. For example, on a Windows 95 system using Small Fonts on a standard VGA display, the number of pixels per logical inch is 96.

[whitegourd]

打印窗口时，如何判断该是用A4还是A3，或横打还是竖打尺寸更合适