pnm | A Ruby library for PNM image files | Image Editing library

The "~" part of the file name points to your personal home directory (not your current working directory). When you use a "~" you are giving an absolute path, not a path relative to your working directory. If you want to find the file in your current working directory, use

You'll need to pass the file name to the read function, as in

Updated Answer

If you want to decode the RGB565 and write a NetPBM format PNM file without using ImageMagick, you can do this:

It seams PIL and crop has some problems with LZW compression. Removing the compression with Photoshop makes the script running like expected.

If you need to pass all variables to AJAX, use .serialize().

There is a problem with the order of the libraries in the link command you show, gstreamer libraries must come after -lwx_gtk3u-3.1 and not before it as they do, when using static libraries.

It's not clear to me where does this command actually come from, normally you should run make inside build-gtk/samples/mediaplayer directory, is this really what you're doing? I.e. how exactly do you the provided makefiles and which ones are you using?

This looks like a bug in static monolithic build when using media library and should be fixed in wxWidgets itself. I don't know about the new errors, i.e. the missing gst_event_parse_instant_rate_change and other symbols, I don't have anything like this on my system, so I suspect this might be due to a mix of gstreamer libraries on your system due to your previous attempts to circumvent the problem.

P.S. Avoid using all these --enable-xxx options, they're all on by default anyhow (and those that are off are usually off for a good reason).

Try,

You need to only select the .subtot input inside the current table you're in before updating it. Try this.

You are accessing NMLVCUSTOMDRAW from the wrong lParam.

In a ListView's NM_CUSTOMDRAW notification, the wParam is always 0, and the lParam is a NMLVCUSTOMDRAW*, but you are casting that to NMLISTVIEW* instead, which is wrong. There is no NMLISTVIEW provided in NM_CUSTOMDRAW. And even if there were, the NMLISTVIEW::lParam field contains the ListView item's user-defined data, as set by the application via LVM_SETITEM/ListView_SetItem(). So that is not what you want anyway.

You need to cast pCWP->lParam directly to NMLVCUSTOMDRAW* instead. And only for a SysListView32 control. A SysHeader32 control uses NMCUSTOMDRAW* instead, eg: