@suslucoder are you sure com4 is the correct name ? something seems of, I would suggest using https://doc.qt.io/qt-5/qserialportinfo.html
to query for the correct port and port name
@suslucoder said in Declare multiple png's on a path:
Doesnt it contains 3 png?
No
You should check the code to see what it does with that string.
%1, %2... are used to format string, see https://doc.qt.io/qt-5/qstring.html#arg
@suslucoder said in Svg files does not appear on the screen:
There is no error code, i debug it but i cannot find any error also
Please simplify your code. Just write a small program that displays 1 PNG image and does nothing else.
When that works, replace the PNG image with an SVG image.
@suslucoder
If you changed anything in ui_mainwindow.h this could happen. If you get what seems like an inexplicable error when compiling, wiping the output directory can sometimes resolve. However, this does not apply to normal, run-of-the-mill errors!
@dheerendra said in error: aggregate 'QPainterPath path' has incomplete type and cannot be defined:
include <QPainterPath> may be missing. Just add it.
got the same bug，debug it by add “ include <QPainterPath> ”
@suslucoder said in QtCharts::QLineSeries(0x2ea7560, There is no data on chart:
error says QtCharts::QLineSeries(0x2ea7560)
What "error"?
qDebug()<< series;
Maybe QtCharts::QLineSeries(0x2ea7560) is what that prints when you ask it to print a QLineSeries *? Since it is a pointer, maybe you intended to go qDebug()<< *series;?
