[SOLVED] Reading QColor from an INI file

[astodolski]

I have an entry in an INI file that is supposed to set a QColor.

When I execute the following line:

@
m_MarkerColor = IniSettings.value("Testing/MarkerColor", QColor(128, 0, 0)).value<QColor>();
@

m_MarkerColor is an Invalid color. The entry in the INI file is:

@
[Testing]
MarkerColor=@QColor(0 0 128)
@

I suspect that perhaps the format may be incorrect as listed in the INI file or is it how I call the value function.

Thanks in advance

[Subst27]

Hello!

for example

QColor m_MarkerColor;
QSettings settings;

write:

settings.setValue("MarkerColor",m_MarkerColor.rgba());

read:

m_MarkerColor=settings.value("MarkerColor",0).toUInt();

[astodolski]

Returns 0 (the default). How do you format the INI file for the correct value to be read? I'm only concerned with reading and not setting.

Thanks

[Subst27]

look rgba format of the color conseption

place in your ini such record (just sample)

MarkerColor=4294967040

it's look like 4294967040, for example

also u can use the #FFFFFFFF expression, but remember that it is 16 number base and u must interpret it in program

[Subst27]

in Assistant

An ARGB quadruplet on the format #AARRGGBB, equivalent to an unsigned int.

[astodolski]

I understand. I was wanting to set it as a QColor entry in the INI file. I wonder if that is even possible

[Subst27]

why?

really possible.

you can read value as string and then analyze it whith RegExp

[astodolski]

[quote author="Subst27" date="1421077722"]in Assistant

An ARGB quadruplet on the format #AARRGGBB, equivalent to an unsigned int.
[/quote]

So the entry in the INI file then would be:

@
MarkerColor= @QRgb(#00000080)
@

OR

@
MarkerColor= #00000080
@

[astodolski]

[quote author="Subst27" date="1421077722"]in Assistant

An ARGB quadruplet on the format #AARRGGBB, equivalent to an unsigned int.
[/quote]

So the entry in the INI file then would be:

@
MarkerColor= @QRgb(#00000080)
@

OR

@
MarkerColor= #00000080
@

[astodolski]

[quote author="Subst27" date="1421077934"]why?

really possible.

you can read value as string and then analyze it whith RegExp

[/quote]

As string? Didn't consider that. OK. I'll try that

[Subst27]

MarkerColor= #00000080

It seems the obvious and the apply the toHex()

[Subst27]

whith the string like QColor(R,G,B)

you can remove QColor and brackets and then whis split(",") take the Red,Green and Blue values of your color

[astodolski]

[quote author="Subst27" date="1421078199"]MarkerColor= #00000080

It seems the obvious and the apply the toHex()[/quote]

toHex() isn't available in this context.

[Subst27]

try to remove # sign

it's issuer of syntax

from Assistant

QByteArray QByteArray::​toHex() const

Returns a hex encoded copy of the byte array. The hex encoding uses the numbers 0-9 and the letters a-f.

[astodolski]

[quote author="Subst27" date="1421078846"]try to remove # sign

it's issuer of syntax

from Assistant

QByteArray QByteArray::​toHex() const

Returns a hex encoded copy of the byte array. The hex encoding uses the numbers 0-9 and the letters a-f.
[/quote]

It is unclear what you are trying to illustrate.

Perhaps a trivial example?

[Subst27]

can you wait some minutes?

[astodolski]

[quote author="Subst27" date="1421079781"]can you wait some minutes?[/quote]

Of course

[Subst27]

I found better variant

in INI

[common]
color=#FF0000

result

"#FF0000"
16711680
QColor(ARGB 1, 1, 0, 0)

look code in next message

[Subst27]

@QSettings settings(qApp->applicationDirPath()+"/color.ini",QSettings::IniFormat);

QColor color;
settings.beginGroup("common");
QString string=settings.value("color","#0000FF").toString();
qDebug()<<string;
string.remove(0,1);
bool ok;
uint value=string.toUInt(&ok,16);
qDebug()<<value;
color=QColor::fromRgb(value);
qDebug()<<color;@

[andre]

I'd add a bit more checking of the input. Before removing the first character, check if it actually is a # sign. And check if the length of the rest is what you expect (6 characters for a 3x8bit color).