Multicolumn vertical toolbar

[don_AC64]

How can I create a multicolumn vertical toolbar? It should have an appearance like this:

A           D

B           E

C           F


At present, the only way I know to obtain this result is to list the toolbar items, in the editor, in the following order:

Code:

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A
D
B
E
C
F

But this way is confusing whenever I want to change any item inside this toolbar.

[Gintaras]

QM uses standard Windows control of class ToolbarWindow32. It does not support this.