Fix bug of window closing and reshowing

Sine Striker

2024-02-23 6c0043c1e3d97398828fbd56448f1cd8ee201e66

 src/CMakeLists.txt

@@ -17,6 +17,9 @@
qm_add_definition(QWINDOWKIT_ENABLE_QT_WINDOW_CONTEXT
    CONDITION QWINDOWKIT_ENABLE_QT_WINDOW_CONTEXT
)
qm_add_definition(QWINDOWKIT_ENABLE_STYLE_AGENT
    CONDITION QWINDOWKIT_ENABLE_STYLE_AGENT
)
qm_add_definition(QWINDOWKIT_ENABLE_WINDOWS_SYSTEM_BORDERS
    CONDITION QWINDOWKIT_ENABLE_WINDOWS_SYSTEM_BORDERS
)