DI_BUTTON

Far Manager

DI_BUTTON

The DI_BUTTON dialog item describes a Push Button control.

struct FarDialogItem
{
  int Type          = DI_BUTTON
  int X1            = X
  int Y1            = Y
  int X2            = 0 (not used in Dialog API 1.0)
  int Y2            = Y (equals to Y1)
  int Focus         = Focus
  int Selected      = Selected
  DWORD Flags       = Flags
  int DefaultButton = DefaultButton
  char Data[512]    = Button caption
};

Attention!

This is an exemplary structure; read full description here.

Focus

Keyboard focus flag.

Selected

If the button had focus when the user pressed <Enter> this field is set to 1.

Flags

There are several flags applicable to the DI_BUTTON item:

Flag	Description
DIF_BTNNOCLOSE	Disables dialog closing after pressing the button.
DIF_CENTERGROUP	Sequential items having this flag set and equal vertical coordinates will be horizontally centered in the dialog. Their X1 and X2 coordinates are ignored. Useful for centering button groups.
DIF_NOBRACKETS	Display button titles without brackets.
DIF_SETCOLOR	The low byte of Flags will be used as the item color.
DIF_DISABLE	Disables user access to the control.
DIF_NOFOCUS	The dialog item cannot receive keyboard focus, but can handle other user events.
DIF_SHOWAMPERSAND	Show ampersand symbol in caption instead of using it for defining hotkeys.

Event

Event	Description
DN_DRAWDLGITEM	This event is sent to the dialog callback function just before the button control is drawn.
DN_CTLCOLORDLGITEM	The plugin should pass the color attributes of the button when this event arrives. Param2 argument (foreground+background): LoWord LoByte - color of the caption (COL_WARNDIALOGBUTTON or COL_DIALOGBUTTON) LoWord HiByte - color of highlighted text (COL_WARNDIALOGHIGHLIGHTBUTTON or COL_DIALOGHIGHLIGHTBUTTON) Param2, when the button has focus: LoWord LoByte - color of the caption (COL_WARNDIALOGSELECTEDBUTTON or COL_DIALOGSELECTEDBUTTON) LoWord HiByte - color of highlighted text (COL_WARNDIALOGHIGHLIGHTSELECTEDBUTTON or COL_DIALOGHIGHLIGHTSELECTEDBUTTON) HiWord LoByte - 0 HiWord HiByte - 0 If the special DIF_SETCOLOR flag is used, then the button's caption (LoWord LoByte) will be drawn according to the above settings.
DN_KEY	This event comes after the user has pressed a key in the dialog.
DN_HOTKEY	A hotkey was pressed (Alt-<letter>).
DN_MOUSECLICK	This event comes after the user has clicked one of the dialog items or outside the dialog with a mouse button.
DN_BTNCLICK	The button was pressed.
DN_KILLFOCUS	This event is sent before the button loses the focus, if the flag DIF_NOFOCUS was not used.
DN_GOTFOCUS	This event is sent after the button has received the keyboard focus, if the flag DIF_NOFOCUS was not used.

Remarks

The FarDialogItem structure is described assuming the use of named unions. For more information, see _FAR_NO_NAMELESS_UNIONS.