Qt-获取EXE版本信息（Qt5+win10）(LPCWSTR、std::wstring)
作者：互联网
相关资料：
https://blog.csdn.net/scz653037148/article/details/83307252 Qt 获取exe版本等详细信息
https://blog.csdn.net/qq_33233768/article/details/81665275 QString与std::wstring的转换问题
https://download.csdn.net/download/zhujianqiangqq/72408654 CSDN代码包下载
代码：
.pro
1 QT += core gui
2
3 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
4
5 CONFIG += c++11
6
7 # The following define makes your compiler emit warnings if you use
8 # any Qt feature that has been marked deprecated (the exact warnings
9 # depend on your compiler). Please consult the documentation of the
10 # deprecated API in order to know how to port your code away from it.
11 DEFINES += QT_DEPRECATED_WARNINGS
12
13 # You can also make your code fail to compile if it uses deprecated APIs.
14 # In order to do so, uncomment the following line.
15 # You can also select to disable deprecated APIs only up to a certain version of Qt.
16 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
17
18 SOURCES += \
19 main.cpp \
20 mainwindow.cpp
21
22 HEADERS += \
23 mainwindow.h
24
25 FORMS += \
26 mainwindow.ui
27
28 #LIBS += -lUser32
29 LIBS += -lVersion
30
31 # Default rules for deployment.
32 qnx: target.path = /tmp/$${TARGET}/bin
33 else: unix:!android: target.path = /opt/$${TARGET}/bin
34 !isEmpty(target.path): INSTALLS += target
View Code
main.h
1 #include "mainwindow.h"
2
3 #include <QApplication>
4
5 int main(int argc, char *argv[])
6 {
7 QApplication a(argc, argv);
8 MainWindow w;
9 w.show();
10 return a.exec();
11 }
View Code
mainwindow.h
1 #ifndef MAINWINDOW_H
2 #define MAINWINDOW_H
3
4 #include <Windows.h>
5 #include "winver.h"
6 #include <QMainWindow>
7 #include <QDebug>
8
9 using namespace std;
10
11 QT_BEGIN_NAMESPACE
12 namespace Ui { class MainWindow; }
13 QT_END_NAMESPACE
14
15 class MainWindow : public QMainWindow
16 {
17 Q_OBJECT
18
19 public:
20 MainWindow(QWidget *parent = nullptr);
21 ~MainWindow();
22
23 private slots:
24 void on_pushButton_clicked();
25
26 private:
27 Ui::MainWindow *ui;
28 };
29 #endif // MAINWINDOW_H
View Code
mainwindow.cpp
1 #include "mainwindow.h"
2 #include "ui_mainwindow.h"
3
4 MainWindow::MainWindow(QWidget *parent)
5 : QMainWindow(parent)
6 , ui(new Ui::MainWindow)
7 {
8 ui->setupUi(this);
9 }
10
11 MainWindow::~MainWindow()
12 {
13 delete ui;
14 }
15
16 std::wstring qToStdWString(const QString &str)
17 {
18 #ifdef _MSC_VER
19 return std::wstring((const wchar_t *)str.utf16());
20 #else
21 return str.toStdWString();
22 #endif
23 }
24
25 QString GetFileVertion(QString fullName){
26 DWORD dwLen = 0;
27 char* lpData=NULL;
28 LPCWSTR str_path;
29 std::wstring ss = qToStdWString(fullName);
30 str_path = ss.c_str();
31 BOOL bSuccess = FALSE;
32 QString fileInfomation;
33 DWORD vHandle=0;
34 //获得文件基础信息 【Q tea 原创】
35 //--------------------------------------------------------
36 dwLen = GetFileVersionInfoSize( str_path, &vHandle);
37 qDebug()<<"GetLastError:" << GetLastError();
38 if (0 == dwLen)
39 {
40 qDebug()<<"获取版本字节信息失败!";
41 return"";
42 }
43 qDebug()<<"版本信息字节大小："<<dwLen;
44 lpData =(char*)malloc(dwLen+1);
45 if (NULL == lpData)
46 {
47 qDebug()<<"分配内存失败";
48 return "";
49 }
50 bSuccess = GetFileVersionInfo( fullName.toStdWString().c_str(),0, dwLen+1, lpData);
51 if (!bSuccess)
52 {
53 qDebug()<<"获取文件版本信息错误!";
54
55 return"";
56 }
57 LPVOID lpBuffer = NULL;
58 UINT uLen = 0;
59
60 //获得语言和代码页(language and code page),规定，套用即可
61 //---------------------------------------------------
62 bSuccess = VerQueryValue( lpData,
63 (TEXT("\\VarFileInfo\\Translation")),
64 &lpBuffer,
65 &uLen);
66 QString strTranslation,str1,str2;
67 unsigned short int *p =(unsigned short int *)lpBuffer;
68 str1.setNum(*p,16);
69 str1="000"+ str1;
70 strTranslation+= str1.mid(str1.size()-4,4);
71 str2.setNum(*(++p),16);
72 str2="000"+ str2;
73 strTranslation+= str2.mid(str2.size()-4,4);
74
75 QString str_value;
76 QString code;
77 //以上步骤需按序进行，以下步骤可根据需要增删或者调整
78
79 //获得文件说明：FileDescription
80 //---------------------------------------------------------
81 code ="\\StringFileInfo\\"+ strTranslation +"\\FileDescription";
82 bSuccess = VerQueryValue(lpData,
83 (code.toStdWString().c_str()),
84 &lpBuffer,
85 &uLen);
86 if (!bSuccess)
87 {
88 qDebug()<<"Get file verstion error!";
89 }
90 else
91 {
92 str_value="文件说明：" + QString::fromUtf16((const unsigned short int *)lpBuffer)+"\n";
93 fileInfomation +=str_value;
94 }
95 //获得文件版本信息：FileVersion
96 //-----------------------------------------------------
97 code ="\\StringFileInfo\\"+ strTranslation +"\\FileVersion";
98 bSuccess = VerQueryValue(lpData,
99 (code.toStdWString().c_str()),
100 &lpBuffer,
101 &uLen);
102 if (!bSuccess)
103 {
104 qDebug()<<"获取文件版本信息错误!";
105
106 }
107 else
108 {
109 str_value="文件版本信息：" + QString::fromUtf16((const unsigned short int *)lpBuffer)+"\n";
110 fileInfomation +=str_value;
111 }
112 //获得文件产品名称
113 //---------------------------------------------------------
114 code ="\\StringFileInfo\\"+ strTranslation +"\\ProductName";
115 bSuccess = VerQueryValue(lpData,
116 (code.toStdWString().c_str()),
117 &lpBuffer,
118 &uLen);
119 if (!bSuccess)
120 {
121 qDebug()<<"Get file ProductName error!";
122
123 }
124 else
125 {
126 str_value="产品名称：" + QString::fromUtf16((const unsigned short int *)lpBuffer)+"\n";
127 fileInfomation +=str_value;
128 }
129 //获得产品版本信息：ProductVersion
130 //-----------------------------------------------------
131 code ="\\StringFileInfo\\"+ strTranslation +"\\ProductVersion";
132 bSuccess = VerQueryValue(lpData,
133 (code.toStdWString().c_str()),
134 &lpBuffer,
135 &uLen);
136 if (!bSuccess)
137 {
138 qDebug()<<"获取产品版本信息错误!";
139
140 }
141 else
142 {
143 str_value="产品版本信息：" + QString::fromUtf16((const unsigned short int *)lpBuffer)+"\n";
144 fileInfomation +=str_value;
145 }
146 //获得文件内部名称 InternalName
147 //---------------------------------------------------------
148 code ="\\StringFileInfo\\"+ strTranslation +"\\InternalName";
149 bSuccess = VerQueryValue(lpData,
150 (code.toStdWString().c_str()),
151 &lpBuffer,
152 &uLen);
153 if (!bSuccess)
154 {
155 qDebug()<<"Get file InternalName error!";
156
157 }
158 else
159 {
160 str_value="内部名称：" + QString::fromUtf16((const unsigned short int *)lpBuffer)+"\n";
161 fileInfomation +=str_value;
162 }
163
164
165 //获得原始文件名 OriginalFileName
166 //---------------------------------------------------------
167 code ="\\StringFileInfo\\"+ strTranslation +"\\OriginalFileName";
168 bSuccess = VerQueryValue(lpData,
169 (code.toStdWString().c_str()),
170 &lpBuffer,
171 &uLen);
172 if (!bSuccess)
173 {
174 qDebug()<<"Get file OriginalFileName error!";
175
176 }
177 else
178 {
179 str_value="原始文件名：" + QString::fromUtf16((const unsigned short int *)lpBuffer)+"\n";
180 fileInfomation +=str_value;
181 }
182 //获得合法版权 LegalTradeMarks 【Q tea 原创】
183 //---------------------------------------------------------
184 code ="\\StringFileInfo\\"+ strTranslation +"\\Type";
185 bSuccess = VerQueryValue( lpData,
186 (code.toStdWString().c_str()),
187 &lpBuffer,
188 &uLen);
189 if (!bSuccess)
190 {
191 qDebug()<<"Get file LegalTradeMarks error!";
192
193
194 }
195 else
196 {
197 str_value="版权：" + QString::fromUtf16((const unsigned short int *)lpBuffer)+"\n";
198 fileInfomation +=str_value;
199 }
200
201 delete lpData;
202
203 return fileInfomation;
204 }
205
206 void MainWindow::on_pushButton_clicked()
207 {
208 ui->textEdit->append(GetFileVertion(QString("D:/vrtsconApp.exe")));
209 }
View Code
问题描述：
在qt工程中调用QString::fromStdWString()时，老是报错error LNK2019: 无法解析的外部符号...QString::fromStdWString(...)...
原因：
在Qt库中 wchar_t 不是内置类型，所以QT建议我们构建基于Qt的软件时，也不要将wchar_t作为内置类型。但是在一些情况下，其他的库构建时可能已经将wchar_t作为了内置类型。当使用std::wstring、QString::toStdWString()和String::fromStdWString() 将导致链接错误.
解决方案：
QString转成std::wstring：
/*! Convert an QString to a std::wstring */
std::wstring qToStdWString(const QString &str)
{
#ifdef _MSC_VER
return std::wstring((const wchar_t *)str.utf16());
#else
return str.toStdWString();
#endif
}
std::wstring转成QString：
/*! Convert an std::wstring to a QString */
QString stdWToQString(const std::wstring &str)
{
#ifdef _MSC_VER
return QString::fromUtf16((const ushort *)str.c_str());
#else
return QString::fromStdWString(str);
#endif
标签：std,Qt5,Qt,mainwindow,wstring,QString,str,MainWindow 来源： https://www.cnblogs.com/FKdelphi/p/15750822.html