Fix the remaining Qt6 compile blockers

Clears the last five spots that stop master from compiling against Qt6
(all mirrored from the proven qt6-build line):

- qgimanager.h/.cpp: in Qt6 QVector is an alias for QList, so the
  deprecated QList overloads of manage()/release() collide with the
  QVector ones (same signature). Keep them on Qt5 only.
- diagramview.cpp: one unguarded QTextStream::setCodec() call (removed
  in Qt6, which defaults to UTF-8).
- print/projectprintwindow.cpp: QApplication::desktop() was removed in
  Qt6; use QWidget::screen() there, keep the old path on Qt5.
- titleblocktemplate.cpp: QDomDocument::setContent() returns a
  ParseResult in Qt6 whose operator bool is explicit; static_cast keeps
  the bool initialization working on both.

With these, master configures and builds to a running binary with
Qt 6.11 (mingw, BUILD_WITH_KF5=OFF); every change is guarded or
dual-safe, the Qt5 build is unaffected.
This commit is contained in:
Dieter Mayer
2026-07-17 21:01:26 +02:00
parent 5785f57679
commit 12afadd095
5 changed files with 21 additions and 2 deletions
+3 -1
View File
@@ -103,7 +103,9 @@ bool TitleBlockTemplate::loadFromXmlFile(const QString &filepath) {
// parse its content as XML
QDomDocument xml_doc;
bool xml_parsing = xml_doc.setContent(&template_file);
// Qt6 QDomDocument::setContent() returns a ParseResult (explicit bool);
// static_cast keeps this working on both Qt5 (bool) and Qt6.
bool xml_parsing = static_cast<bool>(xml_doc.setContent(&template_file));
if (!xml_parsing) {
return(false);
}