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- //----------------------------------------------------------------------------
- // ObjectWindows - (C) Copyright 1991, 1993 by Borland International
- // source\owl\button.cpp
- // Implementation of class TButton. This defines the basic behavior
- // of all buttons.
- //----------------------------------------------------------------------------
- #pragma hdrignore SECTION
- #include <owl\owlpch.h>
- #include <owl\button.h>
- #include <owl\applicat.h>
- #include <bwcc.h>
-
- #if !defined(SECTION) || SECTION == 1
-
- DEFINE_RESPONSE_TABLE1(TButton, TControl)
- EV_WM_GETDLGCODE,
- EV_MESSAGE(BM_SETSTYLE, BMSetStyle),
- END_RESPONSE_TABLE;
-
- //
- // constructor for a TButton object
- //
- TButton::TButton(TWindow* parent,
- int id,
- const char far* text,
- int x, int y, int w, int h,
- BOOL isDefault,
- TModule* module)
- : TControl(parent, id, text, x, y, w, h, module)
- {
- IsCurrentDefPB = FALSE; // not used for buttons in windows
- IsDefPB = FALSE; // not used for buttons in windows
-
- if (isDefault)
- Attr.Style |= BS_DEFPUSHBUTTON;
-
- else
- Attr.Style |= BS_PUSHBUTTON;
- }
-
- //
- // constructor for a TButton to be associated with a MS-Windows
- // interface element created by MS-Windows from a resource definition
- //
- // disables transfer of state data for the TButton
- //
- TButton::TButton(TWindow* parent,
- int resourceId,
- TModule* module) : TControl(parent, resourceId, module)
- {
- DisableTransfer();
- IsDefPB = FALSE; // needed for drawable buttons
- IsCurrentDefPB = FALSE; // needed for drawable buttons
- }
-
- //
- // Return name of predefined Windows button class
- //
- char far*
- TButton::GetClassName()
- {
- if (GetApplication()->BWCCEnabled())
- return BUTTON_CLASS;
- else
- return "BUTTON";
- }
-
- //
- // if this is a drawable button which is supposed to act like a DefPushButton,
- // send DM_SETDEFID to Parent to make this into Parent's default pushbutton
- //
- // this only works (and IsDefPB should only be TRUE) if Parent is a dialog
- //
- void
- TButton::SetupWindow()
- {
- if (IsDefPB && ((Attr.Style & BS_OWNERDRAW) == BS_OWNERDRAW))
- Parent->HandleMessage(DM_SETDEFID, Attr.Id);
- }
-
- //
- // if this is a drawable button we tell Windows whether we want to
- // be treated as the current default push button or not
- //
- UINT
- TButton::EvGetDlgCode(MSG far* msg)
- {
- if ((Attr.Style & BS_OWNERDRAW) != BS_OWNERDRAW)
- return TControl::EvGetDlgCode(msg);
-
- else if (IsCurrentDefPB)
- return DLGC_BUTTON | DLGC_DEFPUSHBUTTON;
-
- else
- return DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON;
- }
-
- //
- // a Button can't have both BS_OWNERDRAW and BS_(DEF)PUSHBUTTON styles so
- // when Windows tries to make us a DEF- or non-DEFPUSHBUTTON we keep track
- // of the desired style in IsCurrentDefPB
- //
- LRESULT
- TButton::BMSetStyle(WPARAM wParam, LPARAM)
- {
- if ((Attr.Style & BS_OWNERDRAW) != BS_OWNERDRAW)
- DefaultProcessing();
-
- else if (wParam == BS_DEFPUSHBUTTON) {
- IsCurrentDefPB = TRUE;
- Invalidate();
-
- } else if (wParam == BS_PUSHBUTTON) {
- IsCurrentDefPB = FALSE;
- Invalidate();
-
- } else {
- DefaultProcessing();
- }
-
- return 0;
- }
-
- #endif
- #if !defined(SECTION) || SECTION == 2
-
- IMPLEMENT_STREAMABLE1(TButton, TControl);
-
- void*
- TButton::Streamer::Read(ipstream& is, uint32 /*version*/) const
- {
- ReadBaseObject((TControl*)GetObject(), is);
- is >> GetObject()->IsDefPB;
- return GetObject();
- }
-
- void
- TButton::Streamer::Write(opstream& os) const
- {
- WriteBaseObject((TControl*)GetObject(), os);
- os << GetObject()->IsDefPB;
- }
- #endif
-