Qt programming 18: Use of the QT palette qpalette

The qpalette class has two enumeration types,

Enumeration

1. colorgroup

Corgroup refers to different States in 3 (when to set the color ):

1> active: gets the focus status.

2> inactive: status in which no focus is obtained.

3> Disable: unavailable.

Normally, the active status and inactive status show the same color. You can also set a different color as needed.

 

2. colorrole (set the color ).
Colorrole refers to the color topic, that is, the color classification of different parts in the form. For example, qpalette: Window refers to the background color and qpalette: windowtext refers to the foreground color.

Frequently used:

Qpalete: window, usually the background color of the window part;
 Qpalette: windowtext, usually the foreground color of the window that does not exist (qlabel can also be used );
 Qpalette: base indicates the background color of text input window components (such as qtextedit, qlinedit, and qplaintextedit ).
 Qpalette: Text, used together with qpalette: Base, refers to the foreground color of the text input window part;
 Qpalette: button, which indicates the background color of the Button widget;
Qpalette: buttontext, which refers to the foreground color of the Button widget.

Qpalette: highlight: used to set the background color when the text is highlighted

Qpalette: highlightedtext: used to set the color when the text is highlighted

Qpalette ::Link: hyperlink text color

Qpalette ::Linkvisted: The color of the hyperlink text after access

 

(Currently, it is rarely used, but can be used directly .)

Qpalette ::Light: Brighter than button

 Qpalette: midlight: brightness between light and button

Qpalette: Dark:

Qpalette ::Mid

Qpalette: Shadow

For example:

 
// Set to automatically fill in the background color UI-> label-> setautofillbackground (true); // set the background color to palette: Shadow UI-> label-> setbackgroundrole (qpalette :: shadow); UI-> label2-> setautofillbackground (true); UI-> label2-> setbackgroundrole (qpalette: Light)
 

Display Effect:

 

// Configure //----------------------------------------------------------------------------------------------------------------How to set the color:

Qpalette: setcolor () sets the color for a colorole.
Qpalette: setbrush ()Set the color for a colorole,You can set images.

 

Note: When setting the background color,Call setautofillbackground (true) first ).

 

Button use palette

// Use palette ---------- on the button to set the button font UI-> toolbt-> setfont (qfont ("", 20, qfont: bold )); UI-> toolbt-> setautoraise (true); UI-> toolbt-> setautofillbackground (true); qpalette PL = UI-> toolbt-> palette (); // set the button text color Pl. setcolor (qpalette: buttontext, qcolor (QT: Red); // use setbrush to set the image Pl. setbrush (qpalette: button, qbrush (qpixmap (":/New/resources/otherpage/tap_bg.png"); UI-> toolbt-> setpalette (PL );
 

Effect:

 

Qtextbrowser or qtextedit use a color palette (text edit box)

// Set part text attributes UI-> plaintextedit-> setfont (qfont ("", 20, qfont: bold )); // UI with effects-> textbrowser-> setfont (qfont ("", 20, qfont: bold); // no effect (qtextbrowser has the text editing function) qfont font = UI-> textbrowser-> font (); font. setcapitalization (qfont: alluppercase); UI-> textbrowser-> setfont (font); // effects // construct qpalette object qpalette P2; // set the background color of the text editing box p2.setcolor (qpalette: Base, qcolor (QT: Gray); // set the text color p2.setcolor (qpalette: text, qcolor (QT: Red); // sets the text background color (active) p2.setcolor (qpalette: active, qpalette: highlight, qcolor (QT:: White); // set the color of the text when the text editing box is highlighted (active) p2.setcolor (qpalette: active, qpalette: highlightedtext, qcolor (QT: Blue )); // to keep the text status consistent (nice looking), set the color p2.setcolor (qpalette: inactive, qpalette: highlight, qcolor (QT: Gray) when the focus is lost )); p2.setcolor (qpalette: inactive, qpalette: highlightedtext, qcolor (QT: Red); // apply focus to the control UI-> plaintextedit-> setpalette (P2 ); UI-> textbrowser-> setpalette (P2 );

Effect: