General and Desktop

@JonB hey sorry didnt receive a notification of the reply. I dont know if my computer was acting up but everytime I ran the build I had to open and close the port with puyty then run the build. then the code worked. very weird.

@Christian-Ehrlicher Yes i'am sure there is data coming

@JonB said in Undefined symbols for arm64: @vcasado said in Undefined symbols for arm64: project(BLETester VERSION 1.1 LANGUAGES CXX) I'm purely guessing, but chage this? E.g. ... LANGUAGES CXX C? Fixed with this! Thank you!

When you add data, there's a begin/endInsertRows pair of function that you should call. Their a responsible for notifying the view that things are changing with regard to the amount of the data.

what you are asking is pretty major: how to write a program to do such and such. You need to be more focused on your requests so that people see you're making some effort on your own. Have you researched your task using internet search engines? How much time have you spent reading about online map services and how they work?

@apoyo Maybe you have agood reason, but the larger question is why would you even use the winsock functions when Qt provides parallel socket handling functions? I mean, you asked on Qt desktop forum, so presumably you are doign a QtWidgets applications, right?

@Loquat said in Dynamic mem allocation in local scope okay?: QState *state = new QState(parent); The local variable state goes out of scope and is destroyed. The new QState created object persists. The "magic" of any class derived from QObject which is created via new QState(parent) is that it gets attached to its parent QObject and when that is destroyed its code destroys its children too. So you don't leak. Read Object Trees & Ownership.

Thank you Chris. I solved it by generating a text file with instructions in vbscript and executing it afterwards. With this variant I can manipulate word documents more easily but it only works for Windows. It's not that efficient but I have a lot more documentation for working with word.application in vbscript. I reiterate my thanks for answering me so quickly.

@jsulm, Thank you. It helped.

@jsulm Thank you ! In my case this structure is auto - generated from a json file using some script. That is the challenge here- manually adding pragma to those auto generated structures.

I think i found the problem. I use QBytearray to pass the data i receive from USB to the rest of the application. In my other applications i directly cast the underlying memory to whatever struct_t is being passed. Instead, in this case, for whatever reason, i converted the data directly uint32_t size; size = data.at(3); size = (size * 256) + data.at(2); size = (size * 256) + data.at(1); size = (size * 256) + data.at(0); which of course should have been uint32_t size; size = (uint8_t)data.at(3); size = (size * 256) + (uint8_t)data.at(2); size = (size * 256) + (uint8_t)data.at(1); size = (size * 256) + (uint8_t)data.at(0); 🙄 The data being received is a variable length array for which the size is currently capped at 256, and i'm currently requesting it at a high enough rate that less than 128 entries are received, given that the timer that requests the data is still in the GUI thread, whenever i click on the button or move around the window (also would explain while it happened very rarely in that case) the timer event is delayed, but only enough that i receive between 128 and 256 entries... and voilà. getting a signed char from QByteArray, which gets sign extended to 32bit and gets stored as an unsigned 32bit variable.

@JonB I had not set edit triggers on my treeview, that's why I was not able to edit the cells on double click. Setting edit triggers solved that issue. Thanks.

@JonB Thank you for your help! The problem was caused by the lack of my basic understanding of QTcpSocket and I will study harder ^_^

Hi, to make sure the DumpIDL symbol is present in the .dll, open a MSVC2017 CMD window: dumpbin /exports "C:\Users\....\QtComSupportDll.dll" DumpIDL should be seen.. Also the Qt examples like ActiveQt simple, it's an .exe not a .dll but it also uses a .DEF file to include the DumpIDL symbol. If you build it, does idc.exe work on it?

@JonB QSocketNotifier fires until there is data to read on the socket. Marking this as solved.

@mpergand @Pl45m4 amazing! thank you both :D

@Perdrix Ah yes, inherited code. The bane of all existence :) Well, auto connection should work as you want. It will do a direct function call when in the same thread, so it doesn't matter that the event loop is blocked.