;in data section
title   du 'XM Player'
.len    = $-title
        dw 0
;...
class du 'PLAYERPLAYERPLAYERPLAYER',0
;...
wc      WNDCLASS CS_BYTEALIGNCLIENT+CS_BYTEALIGNWINDOW+CS_HREDRAW+CS_SAVEBITS+\
        CS_VREDRAW,WindowProc,0,0,0,0,0,0,0,class
;...
.orange = wc.hbrBackground

;and in code section:
invoke  GetModuleHandle,NULL
mov     [wc.hInstance],eax
;...
invoke  CreateSolidBrush,0045AEFFh
mov     [brushes.orange],eax
;...
invoke  LoadIcon,NULL,IDI_APPLICATION
mov     [wc.hIcon],eax
invoke  LoadCursor,NULL,IDC_ARROW
mov     [wc.hCursor],eax
invoke  RegisterClass,wc
test    eax,eax
jz      .error

invoke  MessageBox,NULL,'RegisterClass didn''t mess up','AAAAAAA',MB_ICONQUESTION

stdcall GetFirstArg,argc
invoke  CreateWindowEx,WS_EX_ACCEPTFILES+WS_EX_APPWINDOW,class,title,\
        WS_POPUP+WS_VISIBLE,CW_USEDEFAULT,CW_USEDEFAULT,137,80,NULL,\
        NULL,[wc.hInstance],eax
test    eax,eax
jz      .error