qt提供了qt install framework用于程序打包，方便、快捷，并且可以对界面和功能进行自定义。
但是， 如果使用默认的打包配置，不进行安装页面功能自定义的话， 在修改安装路径时，在对程序进行卸载的时候，会将安装路径下的所有文件
全部删除。 那么，这就会导致一个问题： 如果用户修改了安装路径，没有新建文件夹用来安装，而是直接安装在了D:\目录下，在卸载的时候，会将
D:\下的所有文件全部清除掉。很操蛋的操作！
参考： https://stackoverflow.com/questions/46455360/workaround-for-qt-installer-framework-not-overwriting-existing-installation?r=SearchResults1、
这里采用自定义界面和功能的方式来解决该问题：
1、安装路径设置页面
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>TargetWidget</class>
<widget class="QWidget" name="TargetWidget">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>491</width>
<height>190</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Preferred" vsizetype="Preferred">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="minimumSize">
<size>
<width>491</width>
<height>190</height>
</size>
</property>
<property name="windowTitle">
<string>Form</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<widget class="QLabel" name="description">
<property name="text">
<string/>
</property>
</widget>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QLineEdit" name="targetDirectory">
<property name="readOnly">
<bool>true</bool>
</property>
</widget>
</item>
<item>
<widget class="QToolButton" name="targetChooser">
<property name="sizePolicy">
<sizepolicy hsizetype="Fixed" vsizetype="Preferred">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="minimumSize">
<size>
<width>0</width>
<height>0</height>
</size>
</property>
<property name="text">
<string>...</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_2">
<property name="topMargin">
<number>0</number>
</property>
<item>
<widget class="QLabel" name="warning">
<property name="enabled">
<bool>true</bool>
</property>
<property name="text">
<string>TextLabel</string>
</property>
</widget>
</item>
<item>
<spacer name="horizontalSpacer">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
<item>
<spacer name="verticalSpacer">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>122</height>
</size>
</property>
</spacer>
</item>
</layout>
</widget>
<resources/>
<connections/>
</ui>
2、脚本
var targetDirectoryPage = null;
function Component()
{
installer.gainAdminRights();
component.loaded.connect(this, this.installerLoaded);
}
Component.prototype.createOperations = function()
{
// Add the desktop and start menu shortcuts.
component.createOperations();
component.addOperation("CreateShortcut",
"@TargetDir@/Atlas4500Tuner.exe",
"@DesktopDir@/Atlas4500 Tuner.lnk",
"workingDirectory=@TargetDir@");
component.addOperation("CreateShortcut",
"@TargetDir@/Atlas4500Tuner.exe",
"@StartMenuDir@/Atlas4500 Tuner.lnk",
"workingDirectory=@TargetDir@");
}
Component.prototype.installerLoaded = function()
{
installer.setDefaultPageVisible(QInstaller.TargetDirectory, false);
installer.addWizardPage(component, "TargetWidget", QInstaller.TargetDirectory);
targetDirectoryPage = gui.pageWidgetByObjectName("DynamicTargetWidget");
targetDirectoryPage.windowTitle = "Choose Installation Directory";
targetDirectoryPage.description.setText("Please select where the Atlas4500 Tuner will be installed:");
targetDirectoryPage.targetDirectory.textChanged.connect(this, this.targetDirectoryChanged);
targetDirectoryPage.targetDirectory.setText(installer.value("TargetDir"));
targetDirectoryPage.targetChooser.released.connect(this, this.targetChooserClicked);
gui.pageById(QInstaller.ComponentSelection).entered.connect(this, this.componentSelectionPageEntered);
}
Component.prototype.targetChooserClicked = function()
{
var dir = QFileDialog.getExistingDirectory("", targetDirectoryPage.targetDirectory.text);
targetDirectoryPage.targetDirectory.setText(dir);
}
Component.prototype.targetDirectoryChanged = function()
{
var dir = targetDirectoryPage.targetDirectory.text;
if (installer.fileExists(dir) && installer.fileExists(dir + "/maintenancetool.exe")) {
targetDirectoryPage.warning.setText("<p style=\"color: red\">Existing installation detected and will be overwritten.</p>");
}
else if (installer.fileExists(dir)) {
targetDirectoryPage.warning.setText("<p style=\"color: red\">Installing in existing directory. It will be wiped on uninstallation.</p>");
}
else {
targetDirectoryPage.warning.setText("");
}
installer.setValue("TargetDir", dir);
}
Component.prototype.componentSelectionPageEntered = function()
{
var dir = installer.value("TargetDir");
if (installer.fileExists(dir) && installer.fileExists(dir + "/maintenancetool.exe")) {
installer.execute(dir + "/maintenancetool.exe", "--script=" + dir + "/scripts/auto_uninstall.qs");
}
}
3、覆盖安装
var targetDirectoryPage = null;
function Component()
{
installer.gainAdminRights();
component.loaded.connect(this, this.installerLoaded);
}
Component.prototype.createOperations = function()
{
// Add the desktop and start menu shortcuts.
component.createOperations();
component.addOperation("CreateShortcut",
"@TargetDir@/Atlas4500Tuner.exe",
"@DesktopDir@/Atlas4500 Tuner.lnk",
"workingDirectory=@TargetDir@");
component.addOperation("CreateShortcut",
"@TargetDir@/Atlas4500Tuner.exe",
"@StartMenuDir@/Atlas4500 Tuner.lnk",
"workingDirectory=@TargetDir@");
}
Component.prototype.installerLoaded = function()
{
installer.setDefaultPageVisible(QInstaller.TargetDirectory, false);
installer.addWizardPage(component, "TargetWidget", QInstaller.TargetDirectory);
targetDirectoryPage = gui.pageWidgetByObjectName("DynamicTargetWidget");
targetDirectoryPage.windowTitle = "Choose Installation Directory";
targetDirectoryPage.description.setText("Please select where the Atlas4500 Tuner will be installed:");
targetDirectoryPage.targetDirectory.textChanged.connect(this, this.targetDirectoryChanged);
targetDirectoryPage.targetDirectory.setText(installer.value("TargetDir"));
targetDirectoryPage.targetChooser.released.connect(this, this.targetChooserClicked);
gui.pageById(QInstaller.ComponentSelection).entered.connect(this, this.componentSelectionPageEntered);
}
Component.prototype.targetChooserClicked = function()
{
var dir = QFileDialog.getExistingDirectory("", targetDirectoryPage.targetDirectory.text);
targetDirectoryPage.targetDirectory.setText(dir);
}
Component.prototype.targetDirectoryChanged = function()
{
var dir = targetDirectoryPage.targetDirectory.text;
if (installer.fileExists(dir) && installer.fileExists(dir + "/maintenancetool.exe")) {
targetDirectoryPage.warning.setText("<p style=\"color: red\">Existing installation detected and will be overwritten.</p>");
}
else if (installer.fileExists(dir)) {
targetDirectoryPage.warning.setText("<p style=\"color: red\">Installing in existing directory. It will be wiped on uninstallation.</p>");
}
else {
targetDirectoryPage.warning.setText("");
}
installer.setValue("TargetDir", dir);
}
Component.prototype.componentSelectionPageEntered = function()
{
var dir = installer.value("TargetDir");
if (installer.fileExists(dir) && installer.fileExists(dir + "/maintenancetool.exe")) {
installer.execute(dir + "/maintenancetool.exe", "--script=" + dir + "/scripts/auto_uninstall.qs");
}
}
4、翻译
在脚本中的文字，可以通过qsTr函数进行标记；
利用
lupdate installscript.qs targetWidget.ui -ts [语言].ts
生成ts文件，然后使用linguist进行翻译生成qm文件；