pinentry-qt4: Add TODO file

diff --git a/pinentry-qt4/TODO b/pinentry-qt4/TODO
new file mode 100644 (file)
index 0000000..3d68347
--- /dev/null
+++ b/pinentry-qt4/TODO
@@ -0,0 +1,3 @@
+Doesn't work anymore because QWindow class is used by pinentry 1.1.1.
+According to Qt documentation <https://doc.qt.io/qt-5/qwindow.html>
+this class does not exist in Qt 4 and older versions.