extra data provided to a gauge callback

[Rocky 128]

This question is for C/C++ gauge developer.When the gauge callback is called with service_id PANEL_SERVICE_PRE_INSTALL or PANEL_SERVICE_POST_INSTALL, the value of the parameter "extra_data" is the resource_handle.Can someone tell me what this is? Is it the instance handle of the gauge file, which is a DLL? Is it another handle?Thanks for any info.Eric

[Guest bartels]

I'm not 100% sure if it is the resource handle or a handle to a module a resource can be loaded of (maybe the same). However some sound modules for gauges (e.g. rfgutils.lib) can load a wav file embedded in the gauge itself (load it from the resource part of the gauge). Using ((HINSTANCE)extra_data) as the resource handle does the trick. Maybe even image loading is possible, e.g. with Gdi+ and Bitmap::FromResource((HINSTANCE)extra_data,bitmapName);Quite some time ago when I checked, but I think ((HINSTANCE)extra_data) is different to GetModuleHandle(NULL) (to get a handle to the .gau file).Arne Bartels

[Guest _ak]

GetModuleHandle(NULL) returns not handle of your gau file but handle of main executable. In FS9 it will return handle of fs9.exeGetModuleHandle("mygauge.gau") returns handle of given gauge file name.