Static control refuses to display Unicode

[jj2007]

This cost me half a day of bug chasing, so I'll share the solution with you:

I have a static control that until recently worked fine, displaying Russian text (my favourite test language). Then it stopped and showed only ???????...

Long story short: the control is subclassed using...

Code Select Expand

mov opControl, rv(SetWindowLong, hStatic, GWL_WNDPROC, offset WndProcChild)
...
invoke CallWindowProc, opControl, hWnd, uMsg, wParam, lParam
Straightforward, isn't it? But it shows ???? where Документ was expected. One single char more solved the problem: SetWindowLongW

[NoCforMe]

Good catch. Moral of the story: know thy Unicode from thy ANSI. (I've never used SetWindowLongW(), since I don't have to mess with that Unicode stuff.)

[jj2007]

Setting and displaying Russian was the only problem with the subclass, everything else worked as usual.

It's weird that Windows apparently provides two subclassing options:

The operating system automatically translates messages into Windows (ANSI) code page or Unicode form, depending on the form of the function that has subclassed the window procedure.

[TimoVJL]

Setting and displaying Russian was the only problem with the subclass, everything else worked as usual.

As usual with ...