本文整理汇总了C++中QAxObject::isNull方法的典型用法代码示例。如果您正苦于以下问题：C++ QAxObject::isNull方法的具体用法？C++ QAxObject::isNull怎么用？C++ QAxObject::isNull使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QAxObject的用法示例。
在下文中一共展示了QAxObject::isNull方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
QT_USE_NAMESPACE
int main(int argc, char **argv)
{
CoInitialize(0);
enum State {
Default = 0,
OutOption
} state;
state = Default;
QByteArray outname;
QByteArray object;
for (int a = 1; a < argc; ++a) {
QByteArray arg(argv[a]);
const char first = arg[0];
switch(state) {
case Default:
if (first == '-' || first == '/') {
arg = arg.mid(1);
arg.toLower();
if (arg == "o")
state = OutOption;
else if (arg == "v") {
qWarning("dumpdoc: Version 1.0");
return 0;
} else if (arg == "h") {
qWarning("dumpdoc Usage:\n\tdumpdoc object [-o <file>]"
" \n\tobject : object[/subobject]*"
" \n\tsubobject: property\n"
" \nexample:\n\tdumpdoc Outlook.Application/Session/CurrentUser -o outlook.html");
return 0;
}
} else {
object = arg;
}
break;
case OutOption:
outname = arg;
state = Default;
break;
default:
break;
}
}
if (object.isEmpty()) {
qWarning("dumpdoc: No object name provided.\n"
" Use -h for help.");
return -1;
}
QFile outfile;
if (!outname.isEmpty()) {
outfile.setFileName(QString::fromLatin1(outname.constData()));
if (!outfile.open(QIODevice::WriteOnly | QIODevice::Text)) {
qWarning("dumpdoc: Could not open output file '%s'", outname.data());
}
} else {
outfile.open(stdout, QIODevice::WriteOnly);
}
QTextStream out(&outfile);
QByteArray subobject = object;
int index = subobject.indexOf('/');
if (index != -1)
subobject = subobject.left(index);
QAxObject topobject(QString::fromLatin1(subobject.constData()));
if (topobject.isNull()) {
qWarning("dumpdoc: Could not instantiate COM object '%s'", subobject.data());
return -2;
}
QAxObject *axobject = &topobject;
while (index != -1 && axobject) {
index++;
subobject = object.mid(index);
if (object.indexOf('/', index) != -1) {
int oldindex = index;
index = object.indexOf('/', index);
subobject = object.mid(oldindex, index-oldindex);
} else {
index = -1;
}
axobject = axobject->querySubObject(subobject);
}
if (!axobject || axobject->isNull()) {
qWarning("dumpdoc: Subobject '%s' does not exist in '%s'", subobject.data(), object.data());
return -3;
}
QString docu = axobject->generateDocumentation();
out << docu;
return 0;
}示例2: upload
void SongsOnlineWidget::upload()
{
this->setCursor(Qt::WaitCursor);
QAxObject *excel = NULL;
QAxObject *work_books = NULL;
QAxObject *work_book = NULL;
excel = new QAxObject("Excel.Application");
if (excel->isNull()) {//网络中很多使用excel==NULL判断，是错误的
QMessageBox::critical(0, "错误信息", "没有找到EXCEL应用程序");
return;
}
excel->setProperty("Visible", false);
work_books = excel->querySubObject("WorkBooks");
QString path = lineEdit_upload->text();
if(path.isEmpty())
{
QMessageBox::warning(NULL, "提示", "批量上传路径不能为空,\n点击浏览选择批量上传文件。");
return;
}
work_books->dynamicCall("Open (const QString&)", QString(path));
QVariant title_value = excel->property("Caption"); //获取标题
qDebug()<<QString("excel title : ")<<title_value;
work_book = excel->querySubObject("ActiveWorkBook");
QAxObject *work_sheets = work_book->querySubObject("WorkSheets"); //Sheets也可换用WorkSheets
int sheet_count = work_sheets->property("Count").toInt(); //获取工作表数目
qDebug()<<QString("sheet count : ")<<sheet_count;
int newsong_wheet_index = 0;
for(int i=1; i<=sheet_count; i++)
{
QAxObject *work_sheet = work_book->querySubObject("Sheets(int)", i); //Sheets(int)也可换用Worksheets(int)
QString work_sheet_name = work_sheet->property("Name").toString(); //获取工作表名称
QString message = QString("sheet ")+QString::number(i, 10)+ QString(" name");
if(work_sheet_name.compare("新增歌曲") == 0)
{
newsong_wheet_index = i;
break;
}
qDebug()<<message<<work_sheet_name;
}
if(newsong_wheet_index != 0)
{
QAxObject *work_sheet = work_book->querySubObject("Sheets(int)", newsong_wheet_index);
QAxObject *used_range = work_sheet->querySubObject("UsedRange");
QAxObject *rows = used_range->querySubObject("Rows");
QAxObject *columns = used_range->querySubObject("Columns");
int row_start = used_range->property("Row").toInt(); //获取起始行
int column_start = used_range->property("Column").toInt(); //获取起始列
int row_count = rows->property("Count").toInt(); //获取行数
int column_count = columns->property("Count").toInt(); //获取列数
for(int i=row_start+1; i<=row_count; i++)
{
Media media;
for(int j=column_start; j<=column_count; j++)
{
QAxObject *cell = work_sheet->querySubObject("Cells(int,int)", i, j);
QAxObject *cell_01 = work_sheet->querySubObject("Cells(int)", i);
QVariant value = cell_01->property("Value");
QVariant cell_value = cell->property("Value"); //获取单元格内容
if(j == 1)
media.mid = cell_value.toString();
else if(j == 2)
media.serial_id = cell_value.toString();
else if(j == 3)
media.name = cell_value.toString();
else if(j == 4)
media.language = cell_value.toString();
else if(j == 5)
media.type = cell_value.toString();
else if(j == 6)
media.singer = cell_value.toString();
else if(j == 7)
media.artist_sid_1 = cell_value.toString();
else if(j == 8)
media.artist_sid_2 = cell_value.toString();
else if(j == 9)
media.pinyin = cell_value.toString();
else if(j == 10)
media.header = cell_value.toString();
else if(j == 11)
media.head = cell_value.toString();
else if(j == 12)
media.words = cell_value.toString();
else if(j == 13)
media.path = cell_value.toString();
else if(j == 14)
media.lyric = cell_value.toString();
else if(j == 15)
media.original_track = cell_value.toString();
else if(j == 16)
media.sound_track = cell_value.toString();
else if(j == 17)
//.........这里部分代码省略.........