i think
i can open a windows on the screen
with
---
invoke CreateWindowEx, ....
---
but the accurate syntax i dont know
---
i have for example a screen with 1920 x 1080 pixel

upper left corner = position 0,0
lower right corner = position 1920,1080

i want to have 6 programs - each opens a window of 820 x 240 pixel

1. program should open a window
from position 0,0 to position 820,240

2. program should open a window
from the position 0,241 to position 820,480

3. program should open a window
from the position 0,481 to position 820,720

4. program should open a window
from the position 821,0 to position 1640,240

5. program should open a window
from the position 821,241 to position 1640,480

6. program should open a window
from the position 821,481 to position 1640,720

+---------+---------+
| 1 | 4 |
+---------+---------+
| 2 | 5 |
+---------+---------+
| 3 | 6 |
+---------+---------+

is there an easy way do this?
can you help me to solve this problem?

best regards

This is the first result in google: http://msdn.microsoft.com/en-us/library/windows/desktop/ms632680%28v=vs.85%29.aspx

Just set x and y to the upper-left point of each window.

I suspect that all these windows are a child windows in the frame.
If so, it gets a little more complicated.