Screen Flickering With ScreenUpdating Set To FALSE

trying to copy both the values and the format of a certain range from one worksheet to another I am faced with two problems:

a) how can I copy something without having to previously add ".select"? (in the end I want to avoid any screen flickering)

b) how can I copy both the values and the format in one line (currently I have to use two lines)

Current problem:
Below you can find a code snippet which is repitetiously launched in order to copy data(+format) from many sheets to one sheet, there is other code as well (not shown here), which is launched in between (dealing with charts and pictures). In order to avoid some screen flickering I have already included the "screenupdating=false" line, and I would like to drop the usage of any ".select" in my code, as any ".select" seems to update the screen irrespectively of "application.screenupdating=false" or not.

However, as soon as I erase any ".select" command, I get a runtime-error 1004 at the SECOND run of this code snippet here. The only way to circumvent this seems to include ".select" prior to the line causing the error. Why at the second run? Well, I think, it is because after the second run, the focus might remain with a chart and not anylonger at any cell. Is there any way executing the below code without the screen-flickering?


Sub copySample(ByVal M As Integer)

Dim wksTarget As worksheet, wksNow As Worksheet
Const maxRowsConsidered=1000

Set wksTarget=Worksheets("target")
Set wksNow=Worksheets(M)

columnNow = ((m-1)*8)+1
Application.ScreenUpdating =False