I can not completely plunge into what happened in the VB6 program. This is on Win7-64 and Win10.
I wrote a proof of concept for Q and D to download and display 4K images (3640x2160). Each image occupies 24 MB of memory, so I “knew”, based on a memory limit of 2 GB for 32-bit processes, I could upload no more than 80 images.
The system has 32 GB of memory, but everything that is not available to my program ... right?
Const nPix As Long = 80
Dim Pix(1 To nPix) as stdPicture ' an OLE construct
For k = 1 to nPix
Pix(k) = LoadPicture("next in folder")
Next
No problem, it takes a little time, but it works and uses the expected memory.
For grins, I increased nPix to 100, just to see how it happened. But this is not so. I tried nPix = 200, then 300. I still kept going, by then eating 8 GB of system memory. And no problem with:
PictureBox.PaintPicture Pix(300)
, , ? , ?