Image from disc

wolfgang

Member
Licensed User
Hi,
is it possible to display only a part of an image which is stored on disk and not loaded to memory? Or much easier, this code should work:
B4X:
.
.
.
drawer.DrawImage1("myimage",rectSrc.Value,rectDest.Value,false) ' -> error message
 

wolfgang

Member
Licensed User
Hi Erel,
this is the code and the error message
B4X:
Sub Globals
   'Declare the global variables here.
End Sub

Sub App_Start
   Form1.Show
   draw.New1("Form1",false)
   rsrc.New1(100,100,238,268)
   rdst.New1(0,0,238,268)
   draw.DrawImage1(AppPath & "\stein50.bmp",rsrc.Value,rdst.Value,false)
   Form1.Refresh
End Sub
The image exits, 100%.

Error description:
"Value may not be ZERO"
 

wolfgang

Member
Licensed User
Hi Erel,
thank you. That’s what I did up to now. But I was looking for a possibility to display a small part of a big (20 MB) image(map) on ppc to save memory. So I have to think about of an “automatic” map changing?!
 
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