Qpushbutton- "function refinement"

Section 1 　QT brief introduction

250 More than C++ class
Installation requires setting environment variables （path）
【 add to Tools Inside bin And compiling 32/64 The one in the seat bin】

In the second quarter 　QPushButton

One 、 Constructors

     QPushButton(const QString &text, QWidget *parent = nullptr)
             Parameters ：text --》 The literal information of the button 
         parent --》 The parent window of the button 
QPushButton bt =new QPushButton;// Independent window ;
QPushButton bt =new QPushButton(this);// Embedded in this Point to the window ;

Two 、Geometry

geometry： Positioning coordinates , Length, width, size ;
geometry  --》 Function name setGeometry() ;
 3、 ... and 、 QFont
font --》 Set the font 
font --》 Function name setFont()

Four 、setFont

ui->pushButton->setFont(QFont(" Song style ", 15));

5、 ... and 、text

 Get the text information on the button 
QString content = ui->pushButton->text();
qDebug() << content.toUtf8().data(); // QString  Type transfer  char*  type , Solve the problem of printing Chinese garbled code 

6、 ... and 、setText

 Set the text information on the button 
ui->pushButton->setText(" Button ");

7、 ... and 、move

 Reset the position of the button 
ui->pushButton->move(100, 50);

8、 ... and 、resize

 Reset the size of the button 
ui->pushButton->resize(80, 50);// Wide and high 

Nine 、adjustSize

ui->pushButton->setText(" I am a long, long, long text ");
 Automatically resize the control , To suit its content ;
ui->pushButton->adjustSize();

Ten 、setFocus

 Set the control to get focus 
ui->pushButton->setFocus();

11、 ... and 、hasFocus

 Gets whether the control has focus ; If the control has focus , return  true;
bool b = ui->pushButton->hasFocus();
qDebug() << b;

Twelve 、clearFocus

 Clear the focus of the control 
ui->pushButton->clearFocus();

13、 ... and 、setCursor

 Set when the mouse is in the button control area , The type of cursor 
ui->pushButton->setCursor(QCursor(Qt::BusyCursor));

fourteen 、setDisabled

 Disable control 
ui->pushButton->setDisabled(true);
 15、 ... and 、setEnabled
 Enable controls 
ui->pushButton->setEnabled(true);

sixteen 、setVisible

 Hide controls 
ui->pushButton->setVisible(false);
 Display controls 
ui->pushButton->setVisible(true);

seventeen 、setFlat

 Set the control background transparent ： Set the appearance of the control to tile 
ui->pushButton->setFlat(true);

eighteen 、isFlat

QPushButton *btn = new QPushButton(this); // Create a button in the current interface 
btn->setText(" I am not flat "); // The Settings button displays text 
btn->setGeometry(150, 100, 100, 50);// Set the display position 
btn->setFlat(true);// Set the button to be flat 
if (btn->isFlat())// Judge whether it is flat 
{
    
    btn->setText(" I am flat ");
}

nineteen 、setDefault

 Set press... On the control   Enter key   when , Respond to the control's  click  event 
ui->pushButton->setDefault(true);

twenty 、QIcon

 Set the image path 
QIcon(":/Image/Luffy.png")

The 21st 、setIcon

 Set the icon displayed on the button 
ui->pushButton->setIcon(QIcon(":/Image/Luffy.png"));

Twenty-two 、setIconSize

 Sets the size of the icon 
ui->pushButton->setIconSize(QSize(24, 24));

23 、setStyleSheet

button1.setStyleSheet("
QPushButton{
    font-family:' Song style ';font-size:32px;color:rgb(0,0,0,255);}\
QPushButton{
    background-color:rgb(170,200,50)}\ QPushButton:hover{
    background-color:rgb(50, 170, 200)}")

Twenty-four 、X

 Returns the x coordinate 
int x = x()

twenty-five 、y

QPushButton* btn=new QPushButton(" Button ",this);
btn->move(15,10);
x=btn->x(); // Returns the x coordinate 
y=btn->y(); // Returns the y coordinate 

hexacosa- 、QPoint

QPoint point;

twenty-seven 、pos

point=btn->pos(); // Returns the coordinates of the control --QPoint(15,10)
i=point.x();// extract x coordinate 
i=point.y();// extract y coordinate 

Twenty-eight 、width

i=btn->width(); // Width of control , Does not contain any window frames 

Twenty-nine 、height

i=btn->height(); // Height of control , Does not contain any window frames 

thirty 、QSize

QSize size;
size=btn->size(); // Returns the width and height of the control ;width and height The combination of QSize(100, 30);
i=size.width(); // Extraction width 
i=size.height();// Extraction height 

Thirty-one 、QRect

QRect rect;
rect=btn->geometry(); // The combination of position and size relative to the parent control QRect(15,10 100x30);
i=rect.x(); // extract x coordinate 
i=rect.y(); // extract y coordinate 
size=rect.size();// Extract size -- Width and height 
i=rect.width(); // Extraction width 
i=rect.height(); // Extraction high 

Thirty-two 、setFixedSize

setFixedSize(500,400); //  Set fixed size ( Width and height )

Thirty-three 、Css Style sheets

QPushButton{
    
    background-color: #2786ba;/*  The background color  */
    border-radius:5px;/*  Button border fillet settings  */
    
    /*  Button background icon settings  */
    background-image: url(:/configIcon.png); /*  Background image  */
    background-origin: content;
    background-position: center;/*  The location of the background image  */
    padding-right: 40px;	/*  Background icon padding Parameters  */
    padding-bottom: 2px;/*  Background icon padding Parameters  */
    background-repeat: no-repeat;	/*  Set the tiling mode of the background image  */
    /*  Button text settings  */
    text-align: top;	/*  Alignment position of text  */
    padding-left: 2px;/*  Textual padding Parameters  */		
    padding-top: 2px;
    font-size: 12px;// font size 
    color: #FFFFFF;	/*  text color  */
}

Thirty-four 、Qss sentence

 【1】QPushButton:pressed{
       Set the background picture when the button is pressed    Style design for the main window 
                        background-image: url(:/button_down.png);
                    }
 【2】QPushButton:pressed#regBt{
      Set the specified button regBt The background picture when the button is pressed      Style design for the main window 
                        background-image: url(:/button_down.png);
                    }
 【3】QPushButton:hover{
         Style design for the main window 
                        background-color:#ff00ff;   Setting the background color of the mouse entry control 
                    }

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