MFC PALLETEINDEX to QColor()

[maverick_pol]

Hi guys,

I have to convert a PALLETEINDEX(int value) which returns COLORREF. Haveing the "value" I have to create a QCOlor object.

Can't find which PALLETEINDEX(value) return which color?
ANyone know how to create a QColor having PalleteIndex(value)(int MFC application)

Thanks

[jpn]

MSDN:

COLORREF value has the following hexadecimal form: 0x00bbggrr

To extract the individual values for the red, green, and blue components of a color value, use the GetRValue, GetGValue, and GetBValue macros, respectively.

Qt docs:

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

They seem to be in a slightly different format so you can't pass COLORREF as QRgb, but something like this should do the trick:

COLORREF ref = PALETTEINDEX(n);
QColor color = QColor::fromRgb(GetRValue(ref), GetGValue(ref), GetBValue(ref));

COLORREF ref = PALETTEINDEX(n);
QColor color = QColor::fromRgb(GetRValue(ref), GetGValue(ref), GetBValue(ref));

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[maverick_pol]

Hi,

Thank you for the hint. My application is only using Qt libraries, but I also have an MFC application which I have to convert to Qt.
Howto get the COLOREF in Qt?
I need to find which color represents the PALLETEINDEX(int) in Qt.
ANy other ideas howto do this. I can't use COLORREF in Qt.

Thank you in advance.

Maverick

[jpn]

Where does the palette index come from? Are you writing something portable?

[maverick_pol]

Hi,

Yes it is intended to be portable, there are some sets of colors and they have their RBG values. But the programmer who written the old application used some #define color1 int_value
and than create QPEN(...,...,...PALLETEINDEX(color1)); etc

Is it possible to use the "color1" and create a QColor from it ?

Maverick

[Community_probs]

can anybody tell me how to begin with QT Programmering.
I m new to this Technology.

[maverick_pol]

Start a new thread or read docs first.

Do not write non-related posts in this thread.

Thanks

[jpn]

But the programmer who written the old application used some #define color1 int_value
and than create QPEN(...,...,...PALLETEINDEX(color1)); etc

Is it possible to use the "color1" and create a QColor from it ?

Try:

QColor color = QColormap::instance().colorAt(color1));

QColor color = QColormap::instance().colorAt(color1));

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[maverick_pol]

Hi,

I will test the code today in the afternoon. Thank you for your advice. If anything come up(any errors) I will renew this thread.

Thanks