The MASM Forum

i'm having problems with the mdi children of and app i'm working on. is there some style i should include somewhere? thanks in advance. I'm not be an ass am i?

   I would also like to know of there is another message other than WS_SIZE when a window is MAXIMIZED. not too much to ask i hope.

Is this helping you ? Tutorial 32: Multiple Document Interface (MDI) (http://www.interq.or.jp/chubu/r6/masm32/tute/tute032.html)

   thanks greenhorn. i'm checking it out.

    I'm not sure that the changes made make much difference. Child windows are still strobing when resized. Thanks anyway. :thumbsup:

 Maybe, need double buffering when painting ...

Set the parent window colour to 0 (transparent). You get the flickering due to double repaints.

   Thanks ppls. :thumbsup:

  Nah....it's still strobing. Thanks anyway. Double buffering? how do i do that? :thumbsup:

 In this topic is example (http://masm32.com/board/index.php?topic=8804.0).

What is the WNDCLASSEX style set to ?

If you are using => CS_HREDRAW or CS_VREDRAW

Change it to

CS_BYTEALIGNCLIENT or CS_BYTEALIGNWINDOW

 By my experiance WNDCLASSEX - better for small controls, as buttons, for resizeable windows better WNDCLASS - as more options by silence, will work more sure win GDI of differ OS versions.

    Thanks Hutch, ty guys. worked like a charm.  :thumbsup:

Quote from: Adamanteus on November 07, 2020, 10:26:34 PM
By my experiance WNDCLASSEX - better for small controls, as buttons, for resizeable windows better WNDCLASS - as more options by silence, will work more sure win GDI of differ OS versions.

I made a test with a "difficult" window that has a lot of flicker, and could not see any difference (on Win7-64) :cool:

 As is it's not seenable difference  :hmmm:

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

A macro?

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>

Yerp,

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