Dlg file format

The Dlg file format is specific to RadASM. The following is a brief summary of that format.

Each Dlg file consists of a single dialog header and a series of dialog controls. In effect a Dlg file is just a series of structures written directly to a file. The header for the dialog is detailed in the DLGHEAD structure, this structure describes the general parameters of the dialog. The dialog is also represented by the first DIALOG structure in the file. Each control that is placed on the dialog is described by a DIALOG structure, the controls are added to the file in Z-Order.

The only predefined constant used in Dialogs is the value of the maximum width in Chars of a caption. This number is subject to change but should never drop in order to maintain backward compatibility with older dialog files.

MaxCap    equ    241
DLGHEAD struct
 ver  dd ?  ;Set to 101
 change  dd ?  ;Set to FALSE
 class  db 32 dup(?) ;Set to Null string
 menuid  db 32 dup(?) ;Set to Null string
 font  db 32 dup(?) ;Set to "MS Sans Serif"
 fontsize dd ?  ;Set to 8
 fontht  dd ?  ;Set to -10
 undo  dd ?  ;Set to NULL
 ctlid  dd ?  ;Set to 1001
 hmnu  dd ?  ;Set to NULL
 htlb  dd ?  ;Set to NULL
 hstb  dd ?  ;Set to NULL
 locked  dd ?  ;Set to TRUE or FALSE
 hfont  dd ?  ;Set to NULL
 spare1  dd ?  ;Set to NULL
DLGHEAD ends
DIALOG struct
 hwnd  dd ?  ;Set to TRUE
 partype  dd ?  ;Dialog=1, Controls=0
 oldproc  dd ?  ;Set to NULL
 hpar  dd ?  ;Set to NULL
 hcld  dd ?  ;Set to NULL
 style  dd ?  ;Set to desired style
 exstyle  dd ?  ;Set to desired ex style
 x  dd ?  ;X position in pixels
 y  dd ?  ;Y position in pixels
 ccx  dd ?  ;Width in pixels
 ccy  dd ?  ;Height in pixels
 caption  db MaxCap dup(?) ;Caption max 240+1 char
 ntype  dd ?  ;Follows ToolBox buttons See Note
 ntypeid  dd ?  ;Set to NULL
 tab  dd ?  ;Tab index, Dialog=0, First index=0
 id  dd ?  ;Dialog / Controls ID
 idname  db 32 dup(?) ;ID Name, max 31 chars
 undo  dd ?  ;Set to NULL
 himg  dd ?  ;Set to NULL
DIALOG ends

Note: The ntype field of DIALOG follows the toolbar buttons. This means that the value will be 0 for a dialog, if it is a control the number will match the button number for that control on the control toolbar of the dialog editor.