mdi children strob when resizing. why?

[hutch--]

WNDCLASS is just a macro for WNDCLASSEX, WNDCLASS was used in Win16 and it has been maintained via the macro for backwards compatibility.

[jj2007]

A macro?

Code Select Expand

WNDCLASSA STRUCT
  style             DWORD      ?
  lpfnWndProc       DWORD      ?
  cbClsExtra        DWORD      ?
  cbWndExtra        DWORD      ?
  hInstance         DWORD      ?
  hIcon             DWORD      ?
  hCursor           DWORD      ?
  hbrBackground     DWORD      ?
  lpszMenuName      DWORD      ?
  lpszClassName     DWORD      ?
WNDCLASSA ENDS
...
WNDCLASS  equ  <WNDCLASSA>

[hutch--]

Yerp,

But not a MASM macro, its built into the DLL that provides WNDCLASSEX.