To understand it:
Run QM3,
move the mouse to an editable ComboBox control,
press Ctrl+Shift+W,
look at the bottom part of the "Find window" window.
It displays the tree of child windows of the window. You can see that the selected control is Edit, and it is a child of ComboBox. At the right side click link "Control"; it displays properties of the selected child window.
Run QM3,
move the mouse to an editable ComboBox control,
press Ctrl+Shift+W,
look at the bottom part of the "Find window" window.
It displays the tree of child windows of the window. You can see that the selected control is Edit, and it is a child of ComboBox. At the right side click link "Control"; it displays properties of the selected child window.