QAxWidget 打开word、pdf、excel、ppt
使用QAxWidget打开word，pdf，excel，其中word高亮关键字。
打开txt并高亮关键字见另一文。添加链接描述
PPT操作文字颜色见另一文。添加链接描述
目前存在的问题：
1.excel打开在我电脑上时好时坏，有时可以直接打开并内嵌，有时excel.exe一闪而过，似乎是进程内有问题调起来又崩溃消失了，会报错CoCreateInstance failure (没有注册类)，暂时未解决。
2.ppt只能直接打开，无法内嵌进窗口。
3.word开启后进程可以正常关闭，excel和ppt暂无法关闭。
//打开指定文件，高亮关键字，只有word和txt实现高亮关键字
void openFile(QString strFileName, QStringList& strKeys)
{
closeFiles();
if (strFileName.endsWith(".docx") || strFileName.endsWith(".doc"))
{
openWord(strFileName, strKeys);
}
else if (strFileName.endsWith(".xlsx") || strFileName.endsWith(".xls"))
{
openExcel(strFileName, strKeys);
}
else if (strFileName.endsWith(".pptx") || strFileName.endsWith(".ppt"))
{
openPpt(strFileName, strKeys);
}
else if (strFileName.endsWith(".pdf"))
{
openPdf(strFileName, strKeys);
}
else if (strFileName.endsWith(".txt"))
{
openTxt(strFileName, strKeys);
}
}
//删除进程，保证反复切换和打开各种文档时只有一个进程
void closeFiles()
{
if (this->m_pfileView != nullptr)
{
//这样写可以真正关掉winword进程，但是如果开着其他的进程，都会被杀掉，而不是进杀掉qt打开的这个
/*QProcess process;
QString strCmd = "taskkill /im winword.exe /f";
process.execute(strCmd);
strCmd = "taskkill /im EXCEL.exe /f";
process.execute(strCmd);
strCmd = "taskkill /im POWERPNT.exe /f";
process.execute(strCmd);
strCmd = "taskkill /im AcroRd32.exe /f";
process.execute(strCmd);
process.close();
m_pfileView->close();
m_pfileView->clear();
delete m_pfileView;
m_pfileView = nullptr;*/
if (m_strFileName.endsWith(".docx") || m_strFileName.endsWith(".doc"))
{
QAxObject *app = m_pfileView->querySubObject("Application");
if (app != nullptr)
{
m_pfileView->dynamicCall("Close(boolean)", false);
m_pfileView->close();
m_pfileView->clear();
app->dynamicCall("Quit ()");
delete app;
app = NULL;
}
}
else if(m_strFileName.endsWith(".xlsx") || m_strFileName.endsWith(".xls"))
{
//可能无法关闭
m_pfileView->dynamicCall("Quit()");
}
else if(m_strFileName.endsWith(".pptx") || m_strFileName.endsWith(".ppt"))
{
//可能无法关闭
m_pfileView->dynamicCall("Quit()");
}
QFile fileTemp(m_strSaveFileName);
fileTemp.remove();
if (m_pPlainTextEdit != nullptr)
{
delete m_pPlainTextEdit;
m_pPlainTextEdit = nullptr;
}
}
操作word，实现高亮关键字，实际上是把关键字找出来标记后保存为临时文件。
// 高亮操作函数
// dirName：是待检查文件的路径；keyWords：是要查找的关键字（查找的关键字可能是多个）
bool highLightKeyWordsinWordFile(QString dirName, QStringList keyWords)
{
int lastSeparatorIndex = dirName.lastIndexOf(QDir::separator());
m_strSaveFileName = QApplication::applicationDirPath() + "/" + dirName.mid(lastSeparatorIndex + 1); // 另存为的路径
QAxWidget wordApplication("Word.Application");
QAxObject *documents = wordApplication.querySubObject("Documents");
documents->dynamicCall("Open(const QString&)", dirName);
wordApplication.setProperty("Visible", QVariant(false));
QAxObject* m_doc = wordApplication.querySubObject("ActiveDocument"); // 获取当前工作簿
QAxObject* pRange = m_doc->querySubObject("Content()");
if (NULL != pRange)
{
// 查找关键字
QAxObject *pFind = pRange->querySubObject("Find()");
QStringList keyWordsPosition;
if (NULL != pFind)
{
pFind->dynamicCall("ClearFormatting()");
pFind->setProperty("Format", true);
pFind->setProperty("MatchCase", false);
pFind->setProperty("MatchWholeWord", false);
pFind->setProperty("MatchByte", true);
pFind->setProperty("MatchWildcards", false);
pFind->setProperty("MatchSoundsLike", false);
pFind->setProperty("MatchAllWordForms", false);
for (int i = 0; i < keyWords.size(); ++i) {
// 找到关键字所在的位置，得到一个position，将position添加到keyWordsPosition中。
QString keyWord = keyWords.at(i);
QStringList position = findKeyWordsPosition(pRange->property("Text").toString(), keyWord);
if (!position.contains("")) {
keyWordsPosition << position;
pFind->setProperty("Text", keyWord);
pFind->dynamicCall("Execute()");
while (pFind->property("Found").toBool())
{
bool isHighlight = pFind->parent()->setProperty("HighlightColorIndex", "wdYellow");
pFind->dynamicCall("Execute()");
if (!isHighlight)
{
delete pFind;
pFind = NULL;
delete pRange;
pRange = NULL;
m_doc->dynamicCall("Close(boolean)", true);
wordApplication.dynamicCall("Quit ()");
delete m_doc;
m_doc = NULL;
return false;
}
}
}
}
}
if (keyWordsPosition.size() >= 1) {
QString fileName = dirName.mid(lastSeparatorIndex + 1);
QString filePath = dirName.mid(0, lastSeparatorIndex + 1);
m_doc->dynamicCall("SaveAs(const QString)", m_strSaveFileName);
}
delete pFind;
pFind = NULL;
delete pRange;
pRange = NULL;
m_doc->dynamicCall("Close(Boolean)", true);
m_doc->dynamicCall("Quit()");
delete m_doc;
m_doc = NULL;
return true;
}
return true;
}
QStringList findKeyWordsPosition(QString fileContent, QString keyWord)
{
QStringList resList;
if (fileContent.contains(keyWord)) {
qDebug() << QObject::tr("包含子字符串 ： %1").arg(keyWord);
int startIndex = 0;
// int count = 0;
int keyWordsLen = keyWord.length();
QRegExp rx(QObject::tr("[，。：\r]?([^，。：\r]*(%1)[^，。：\r]*)[，。：\r]?").arg(keyWord));
while ((startIndex = rx.indexIn(fileContent, startIndex)) != -1) {
QString resStr = rx.cap(1).mid(0); // 提取子字符串所在的语句
if (resStr.contains("\r"))
resStr.replace("\r", "");
resList << resStr;
// 找到子字符串
int findIndex = fileContent.indexOf(keyWord, startIndex);
// qDebug() << QObject::tr("keyWords 出现的位置 : %1").arg(findIndex);
startIndex = findIndex + keyWordsLen;
// qDebug() << QObject::tr("keyWords 出现的次数 : %1").arg(++count);
qDebug() << "\n";
}
return resList;
}
return resList << "";
}
void openWord(const QString & str, QStringList& strKeyList)
{
highLightKeyWordsinWordFile(m_strFileName, strKeyList);
m_pfileView = new QAxWidget("Word.Application", ui.m_pFileWidget);
if (m_pfileView == nullptr)
{
return;
}
m_pfileView->resize(width(), ui.m_pFileWidget->height());
m_pfileView->dynamicCall("SetVisible (bool Visible)", "false");//不显示窗体
m_pfileView->setFocusPolicy(Qt::StrongFocus);
QAxObject *documents = m_pfileView->querySubObject("Documents");
m_pfileView->setControl(str);
documents->setProperty("DisplayAlerts", false);
m_pfileView->setProperty("DisplayAlerts", false);
m_pfileView->setProperty("DisplayHorizontalScrollBar", true); // 显示滚动条
//本来是想把文本的显示百分比调整下，但是并不生效。
/*QAxObject* m_doc = m_pfileView->querySubObject("ActiveWindow"); // 获取当前工作簿
QAxObject* pActivePane = m_doc->querySubObject("ActivePane");
QAxObject* pView = pActivePane->querySubObject("View");
QAxObject* pZoom = pView->querySubObject("Zoom");
pZoom->setProperty("Percentage", 150);*/
//等待一会，不然显示出来会特别小
wait(500);
m_pfileView->show();
m_pfileView->raise();
}
打开excel
void openExcel(const QString & str, QStringList& strKeyList)
{
m_pfileView = new QAxWidget("Excel.Application", ui.m_pFileWidget);
if (m_pfileView == nullptr)
{
return;
}
QFileInfo info(str);
if (!info.exists())
{
qDebug() << "file.exists not " << "\n";
}
m_pfileView->setControl(QDir::toNativeSeparators(info.absoluteFilePath()));
m_pfileView->dynamicCall("SetVisible (bool Visible)", false);
m_pfileView->resize(width(), ui.m_pFileWidget->height());
wait(500);
m_pfileView->show();
m_pfileView->raise();
}
打开pdf
void openPdf(const QString & str, QStringList& strKeyList)
{
m_pfileView = new QAxWidget(ui.m_pFileWidget);
if (m_pfileView == nullptr)
{
return;
}
if (!m_pfileView->setControl("Adobe PDF Reader"))
{
return;
}
m_pfileView->dynamicCall("LoadFile(const QString&)", str);
m_pfileView->dynamicCall("SetVisible (bool Visible)", "false");
m_pfileView->setProperty("DisplayAlerts", false);
m_pfileView->setProperty("DisplayScrollBars", true); // 显示滚动条
m_pfileView->resize(width(), ui.m_pFileWidget->height());
m_pfileView->show();
m_pfileView->raise();
}
打开ppt
void openPpt(const QString & str, QStringList& strKeyList)
{
m_pfileView = new QAxWidget("Powerpoint.Application",ui.m_pFileWidget);
if (m_pfileView == nullptr)
{
return;
}
QFileInfo info(str);
if (!info.exists())
{
qDebug() << "file.exists not " << "\n";
}
QAxObject *presentations = m_pfileView->querySubObject("Presentations");
presentations->dynamicCall("Open(QString)", str);
m_pfileView->dynamicCall("SetVisible (bool Visible)", "false");
m_pfileView->resize(width(), ui.m_pFileWidget->height());
wait(500);
m_pfileView->show();
m_pfileView->raise();
}
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版权声明：本文为优快云博主「Willow 」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.youkuaiyun.com/weixin_43554422/article/details/113601506
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