如何通過在 ZE8801102A40AD89DDCFDCAEBF008D25Z 中以編程方式將按鈕添加到主 window 並通過使用 ZC7A628CBA22AE28EB17B5F26 文件更改 styles 它們？

Question

我將在對話框中添加兩個按鈕，我想通過使用 css 文件更改它們的樣式表：

我還定義了如下不起作用的按鈕：

sendButton = new QPushButton();
sendButton->setVisible(true);
sendButton->setText("sendButton");
sendButton->setStyleSheet("QPushButton#sendButton {\n"
                          "background-color: red;\n"
                          "border-style: outset;\n"
                          "border-width: 2px;\n"
                          "border-radius: 10px;\n"
                          "border-color: beige;\n"
                          "font: bold 14px;\n"
                          "min-width: 10em;\n"
                          "padding: 6px;\n"
                          "}\n"
                          "QPushButton#reciveButton {\n"
                          "background-color: green;\n"
                          "border-style: outset;\n"
                          "border-width: 2px;\n"
                          "border-radius: 10px;\n"
                          "border-color: beige;\n"
                          "font: bold 14px;\n"
                          "min-width: 10em;\n"
                          "padding: 6px;\n"
                          "}\n");


ui->horizontalLayout->addWidget(sendButton);

Answer 1

如果您使用ID 選擇器QPushButton#objectName objectName ，請務必同時為您的 QPushButton 設置 object 名稱，否則選擇器將不起作用

sendButton = new QPushButton();
sendButton->setVisible(true);
sendButton->setText("sendButton");

sendButton->setObjectName("sendButton"); /* Set the object name */

sendButton->setStyleSheet(...);

希望這會有所幫助=)

Answer 2

要以編程方式將任何小部件添加到 window (MainWindow, Dialog, ...)，您必須執行以下操作：

1. 創建小部件的實例
2. 創建布局（垂直、水平或網格布局）
3. 將小部件添加到布局
4. 設置窗口的布局

例如：

    //Step 1: create widgets
    QPushButton *sendbtn = new QPushButton("sendButton");
    sendbtn->setObjectName("mySendButton");
    QPushButton *receivebtn = new QPushButton("receiveButton");
    receivebtn->setObjectName("myReceiveButton");

    //Step 2: create a layout
    QHBoxLayout *hlayout = new QHBoxLayout;

    //Step 3: add widgets to the layout
    hlayout->addWidget(sendbtn);
    hlayout->addWidget(receivebtn);
    QWidget *w = new QWidget;
    w->setLayout(hlayout);
    setCentralWidget(w);


    setStyleSheet("QPushButton#mySendButton"
                                   "{"
                     "background-color: red;"
                     "border-style: outset;"
                     "border-width: 2px;"
                     "border-radius: 10px;"
                     "border-color: beige;"
                     "font: bold 14px;"
                     "min-width: 10em;"
                     "padding: 6px;"
                     "}"
                     "QPushButton#myReceiveButton"
                                   "{"
                     "background-color: green;"
                     "border-style: outset;"
                     "border-width: 2px;"
                     "border-radius: 10px;"
                     "border-color: beige;"
                     "font: bold 14px;"
                     "min-width: 10em;"
                     "padding: 6px;"
                     "}");

output如下：