fix qdatetime for qt5/6

[j2doll]

No description provided.

[Copilot]

Pull request overview

This PR aims to fix QDateTime compatibility issues between Qt 5 and Qt 6 by updating deprecated QDateTime constructors that used Qt::LocalTime to use QTimeZone::systemTimeZone() in Qt 6. However, the PR also includes unrelated changes.

Key Changes

• Updated QDateTime constructors in test code to use Qt 6-compatible QTimeZone::systemTimeZone() with conditional compilation
• Added QTimeZone header include for Qt 6 builds
• Initialized an unrelated variable and removed whitespace (scope creep)

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
TestExcel/hello.cpp	Fixed QDateTime constructors to use QTimeZone for Qt 6 and added conditional include for QTimeZone header
TestExcel/readStyle.cpp	Initialized ret variable to 0 (unrelated to PR purpose)
TestExcel/main.cpp	Removed blank lines (unrelated to PR purpose)

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[Copilot]

This change initializing ret to 0 is unrelated to the PR title "fix qdatetime for qt5/6". This should be in a separate PR focused on initialization improvements, or the PR title should be updated to reflect all changes being made.

Suggested change

int ret = 0;

[Copilot]

Removing blank lines is unrelated to the PR title "fix qdatetime for qt5/6". Whitespace-only changes should be in a separate cleanup PR, or the PR title should be updated to reflect all changes being made.

[Copilot]

Removing blank lines is unrelated to the PR title "fix qdatetime for qt5/6". Whitespace-only changes should be in a separate cleanup PR, or the PR title should be updated to reflect all changes being made.

Suggested change

	testReadSax(); // testing new feature
	testReadSax();