CDN_ constants

[jj2007]

Hutch,
Is there a logic I don't understand, or just a translation error?

Windows.inc:
CDN_INITDONE                     equ 0000h
CDN_SELCHANGE                    equ 0001h
CDN_FOLDERCHANGE                 equ 0002h
CDN_SHAREVIOLATION               equ 0003h
CDN_HELP                         equ 0004h
CDN_FILEOK                       equ 0005h
CDN_TYPECHANGE                   equ 0006h
CDN_INCLUDEITEM                  equ 0007h

CommDlg.h:
#define CDN_FIRST   (0U-601U)
#define CDN_LAST    (0U-699U)

// Notifications from Open or Save dialog
#define CDN_INITDONE            (CDN_FIRST - 0x0000)
#define CDN_SELCHANGE           (CDN_FIRST - 0x0001)
#define CDN_FOLDERCHANGE        (CDN_FIRST - 0x0002)
#define CDN_SHAREVIOLATION      (CDN_FIRST - 0x0003)
#define CDN_HELP                (CDN_FIRST - 0x0004)
#define CDN_FILEOK              (CDN_FIRST - 0x0005)
#define CDN_TYPECHANGE          (CDN_FIRST - 0x0006)
#if (NTDDI_VERSION >= NTDDI_WIN2K)
#define CDN_INCLUDEITEM         (CDN_FIRST - 0x0007)
#endif // (NTDDI_VERSION >= NTDDI_WIN2K)

[hutch--]

 

I don't claim to understand the logic you don't understand but it looks like the lead equate is missing and needs to be fixed.

[MichaelW]

CDN_FIRST and CDN_LAST are defined on lines 15032 and 15033:

Code Select Expand


CDN_FIRST        equ 0-601
CDN_LAST         equ 0-699

But not used for the other definitions.

Code Select Expand


//===================================================================
#include <windows.h>
#include <conio.h>
#include <stdio.h>
//===================================================================

void main( void )
{
    printf( "CDN_FIRST          %d\n", CDN_FIRST );
    printf( "CDN_LAST           %d\n", CDN_LAST );
    printf( "CDN_INITDONE       %d\n", CDN_INITDONE );
    printf( "CDN_SELCHANGE      %d\n", CDN_SELCHANGE );
    printf( "CDN_FOLDERCHANGE   %d\n", CDN_FOLDERCHANGE );
    printf( "CDN_SHAREVIOLATION %d\n", CDN_SHAREVIOLATION );
    printf( "CDN_HELP           %d\n", CDN_HELP );
    printf( "CDN_FILEOK         %d\n", CDN_FILEOK );
    printf( "CDN_TYPECHANGE     %d\n", CDN_TYPECHANGE );
    printf( "CDN_INCLUDEITEM    %d\n", CDN_INCLUDEITEM );
    getch();
}


Code Select Expand


CDN_FIRST          -601
CDN_LAST           -699
CDN_INITDONE       -601
CDN_SELCHANGE      -602
CDN_FOLDERCHANGE   -603
CDN_SHAREVIOLATION -604
CDN_HELP           -605
CDN_FILEOK         -606
CDN_TYPECHANGE     -607
CDN_INCLUDEITEM    -608


One thing I don't understand in CommDlg.h is why CDN_FIRST and CDN_LAST are specified as unsigned. And since there are no other references to CDN_LAST, I see the possibility that there may be some sort of coding convention in use for common dialogs that may depend on this.

[TouEnMasm]

CDN_FIRST   equ   < 0 - 601>
CDN_LAST   equ   < 0 - 699>
; Notifications from Open or Save dialog
CDN_INITDONE   equ   < CDN_FIRST - 00000h>
CDN_SELCHANGE   equ   < CDN_FIRST - 00001h>
CDN_FOLDERCHANGE   equ   < CDN_FIRST - 00002h>
CDN_SHAREVIOLATION   equ   < CDN_FIRST - 00003h>
CDN_HELP   equ   < CDN_FIRST - 00004h>
CDN_FILEOK   equ   < CDN_FIRST - 00005h>
CDN_TYPECHANGE   equ   < CDN_FIRST - 00006h>
IF ( NTDDI_VERSION GE  NTDDI_WIN2K)
CDN_INCLUDEITEM   equ   < CDN_FIRST - 00007h>
ENDIF ; (NTDDI_VERSION >= NTDDI_WIN2K)
CDM_FIRST   equ   < WM_USER + 100>
CDM_LAST   equ   < WM_USER + 200>
; Messages to query information from the Open or Save dialogs
; lParam = pointer to text buffer that gets filled in
; wParam = max number of characters of the text buffer (including NULL)
; return = < 0 if error; number of characters needed (including NULL)
CDM_GETSPEC   equ   < CDM_FIRST + 00000h>