Please describe the problem:
As we know, under month view condition, calendar would do print preview job by
the unit of month.
If the appointments in the month which you choose to print preview are not shown
in monitor, they would not be print previewed too.

Steps to reproduce:
1. Launch -> Evolution
2. Goto "Calendar" -> Create some appoinment
	   for example: 6 appoinments : 1 appoinment on the  2nd of March,
					1 appoinment on the 15th of March,
					1 appoinment on the 30th of March,
					1 appoinment on the  2nd of April,
					1 appoinment on the 15th of April,
					1 appoinment on the 30th of April,

3. Choose "View" by "Month" -> Drag down until you can see the entire month of
April.
4. Click on the 30th of March Calendar box.
5. Goto "File" -> "Print Preview"


Actual results:
Only appointment that displayed in the monitor get previewed.

Expected results:
All of the appoinment in March is previewed.

Does this happen every time?
yes

Other information: