ASM Community

Hi all! In the following source code, I can't store the result of

GetDlgItem, hDlg, 2000

in the "hLabel" variable ("mov hLabel, eax"). The SendMessage in the WM_TIMER event doesn't display any text if I use "addr hLabel" as hwnd. But, look at the code, and tell me, why it does not work, if I use "addr hLabel" instead of eax :D

; #########################################################################

      .386
      .model flat, stdcall
      option casemap :none

; #########################################################################

      include \masm32\include\windows.inc
      include \masm32\include\kernel32.inc
      include \masm32\include\user32.inc

      includelib \masm32\lib\kernel32.lib
      includelib \masm32\lib\user32.lib

; #########################################################################

      DlgProc PROTO :DWORD, :DWORD, :DWORD, :DWORD

; #########################################################################
    .data
        szTaskBar	db "Shell_TrayWnd", 0 ; taskbar class
        szSysTray	db "TrayNotifyWnd", 0 ; systray class
        szSysClock	db "TrayClockWClass", 0 ; sysclock class

        szTime		db "00:00:00", 0

        lpWidth		dd 0
        lpHeigth	dd 0

        ; hLabel		dd 0

        rect		RECT <> ; structure

        hInstance	EQU 400000h

    .code
start:

      invoke DialogBoxParam, hInstance, 1000, 0, addr DlgProc, 0
    	invoke ExitProcess, eax

; #########################################################################

DlgProc proc hDlg :DWORD, uMsg :DWORD, wParam :DWORD, lParam :DWORD

		.if uMsg == WM_INITDIALOG
        	invoke SendMessage, hDlg, WM_TIMER, 0, 0 ; display time

            invoke FindWindow, addr szTaskBar, 0
            invoke FindWindowEx, eax, 0, addr szSysTray, 0
            invoke FindWindowEx, eax, 0, addr szSysClock, 0
  		push eax ; handle of clock

            invoke GetWindowRect, eax, addr rect ; get window size
            mov eax, rect.right
            sub eax, rect.left ; calculate width
            mov lpWidth, eax
            mov eax, rect.bottom
            sub eax, rect.top
            mov lpHeigth, eax ; calculate heigth

            ; invoke GetDlgItem, hDlg, 2000
            ; mov hLabel, eax

            invoke SetTimer, hDlg, 3000, 1000, 0 ; start timer (1 sec)

            invoke MoveWindow, hDlg, 0, 0, lpWidth, lpHeigth, 0 ; resize
            invoke GetDlgItem, hDlg, 2000
            invoke MoveWindow, eax, 0, 0, lpWidth, lpHeigth, 0 ; resize

            pop eax ; handle of clock
            invoke SetParent, hDlg, eax ; draw dialog over clock

        .elseif uMsg == WM_TIMER
	      invoke GetTimeFormat, 0, TIME_FORCE24HOURFORMAT, 0, 0, \
            					  addr szTime, 9 ; get current time
            invoke GetDlgItem, hDlg, 2000
        	invoke SendMessage, eax, WM_SETTEXT, 0, addr szTime

        .elseif uMsg == WM_CLOSE
        	invoke KillTimer, hDlg, 3000 ; to clean up
        	invoke EndDialog, hDlg, 0
        .endif

		xor eax, eax
        ret

DlgProc endp

; #########################################################################

end start

rsrc.rc ------------------------

#include "resource.h"
1000 DIALOGEX 0, 0, 35, 8
STYLE WS_POPUP
EXSTYLE WS_EX_TOOLWINDOW
FONT 8, "MS Sans Serif"
BEGIN
    CTEXT           "",2000,0,0,35,8,SS_CENTERIMAGE
END

This message was edited by bAZiK, on 7/3/2001 7:41:43 PM

Hmmm..... sounds good. I'll try this. Thanx! edited: works! :D This message was edited by bAZiK, on 7/4/2001 6:45:34 AM