[cpp-qt-client] fix: Converting type double to QString uses scientific counting

[ice909]

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My interface returns an id value of '2660579988', which is then converted to scientific notation by this line of code, which in most cases requires raw strings, not scientific notation

[ice909]

@wing328 Please help me to review this PR.

[wing328]

thanks for the PR

please follow step 3 to update the samples

[wing328]

cc @ravinikam (2017/07) @stkrwork (2017/07) @etherealjoy (2018/02) @MartinDelille (2018/03) @muttleyxd (2019/08)

[wing328]

please also update the description with more details on the issue this PR is trying to address.

[ice909]

@wing328 I have modified it as required

[MartinDelille]

What is the difference between value = QString::number(jval.toDouble()) and value.setNum(jval.toDouble(), 'f', 0) ?

[ice909]

The original method would turn the double value into a scientific count

[ice909]

eg:

QString::number(2147483647) output  2.14748e+09
value.setNum(2147483647, 'f', 0) output 2147483647

I just want him to print it as it is, not in scientific notation

[MartinDelille]

Why are you removing the decimal ? This looks like a data degradation to me. I tested your code and value.setNum(21.474836.47, 'f', 0) output 21.