问

QML表单布局(GridLayout)的麻烦

发布于 2023-01-11 05:02

我现在正在尝试将我的应用UI从C++转换为QML.在某些步骤我需要一个登录窗口,所以我用QML创建它,代码如下:

Window {
    id: loginWindow
    property string username: login.text;
    property string password: password.text;
    property bool issave: savePassword.checked;

    flags: Qt.Dialog
    modality: Qt.WindowModal
    width: 400
    height: 160
    minimumHeight: 160
    minimumWidth: 400
    title: "Login to program"

    GridLayout {
        columns: 2
        anchors.fill: parent
        anchors.margins: 10
        rowSpacing: 10
        columnSpacing: 10

        Label {
            text: "Login"
        }
        TextField {
            id: login
            text: Config.getParam("user")
            Layout.fillWidth: true
        }

        Label {
            text: "Password"
        }
        TextField {
            id: password
            text: Config.getParam("password")
            echoMode: TextInput.Password
            Layout.fillWidth: true
        }

        Label {
            text: "Save password?"
        }
        CheckBox {
            id: savePassword
        }

        Item {
            Layout.columnSpan: 2
            Layout.fillWidth: true
            Button {
                anchors.centerIn: parent
                text: "Enter"
                onClicked: {
                    loginWindow.close();
                }
            }
        }
    }
}



我使用GridLayout作为更兼容的表单布局.但窗口看起来并不像预期的那样.这是一个截图:



GridLayout具有10px的余量,行/列之间也有10px. 

但是在屏幕截图中可以看到带按钮的行既没有边距也没有间距. 

我做错了什么？ 

Qt 5.3.0 Debian 7.5 x32



        
        1 个回答
        
                        
                问题是包含Button的Item没有设置高度.在调试布局问题时,首先要检查这类问题.您可以通过打印项目的几何图形来完成此操作:

Item {
    Layout.columnSpan: 2
    Layout.fillWidth: true

    Component.onCompleted: print(x, y, width, height)

    Button {
        anchors.centerIn: parent
        text: "Enter"
        onClicked: {
            loginWindow.close();
        }
    }
}


这输出:


  qml:0 87 118 0


修复:

Item {
    Layout.columnSpan: 2
    Layout.fillWidth: true
    implicitHeight: button.height

    Button {
        id: button
        anchors.centerIn: parent
        text: "Enter"
        onClicked: {
            loginWindow.close();
        }
    }
}


完整的代码:

import QtQuick 2.2
import QtQuick.Window 2.0
import QtQuick.Controls 1.1
import QtQuick.Layouts 1.1

Window {
    id: loginWindow
    property string username: login.text;
    property string password: password.text;
    property bool issave: savePassword.checked;

    flags: Qt.Dialog
    modality: Qt.WindowModal
    width: 400
    height: 160
    minimumHeight: 160
    minimumWidth: 400
    title: "Login to program"

    GridLayout {
        columns: 2
        anchors.fill: parent
        anchors.margins: 10
        rowSpacing: 10
        columnSpacing: 10

        Label {
            text: "Login"
        }
        TextField {
            id: login
            text: "blah"
            Layout.fillWidth: true
        }

        Label {
            text: "Password"
        }
        TextField {
            id: password
            text: "blah"
            echoMode: TextInput.Password
            Layout.fillWidth: true
        }

        Label {
            text: "Save password?"
        }
        CheckBox {
            id: savePassword
        }

        Item {
            Layout.columnSpan: 2
            Layout.fillWidth: true
            implicitHeight: button.height

            Button {
                id: button
                anchors.centerIn: parent
                text: "Enter"
                onClicked: {
                    loginWindow.close();
                }
            }
        }
    }
}



        
                
                    2023-01-11 05:23  回答
                       球球小白痴_693
                
            
                    
    
    
    
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