// ResizableMsgSupport.h: some declarations to support custom resizable wnds

//

/////////////////////////////////////////////////////////////////////////////

//

// This file is part of ResizableLib

// https://github.com/ppescher/resizablelib

//

// Copyright (C) 2000-2015 by Paolo Messina

// mailto:ppescher@hotmail.com

//

// The contents of this file are subject to the Artistic License 2.0

// http://opensource.org/licenses/Artistic-2.0

//

// If you find this code useful, credits would be nice!

//

/////////////////////////////////////////////////////////////////////////////



#if !defined(AFX_RESIZABLEMSGSUPPORT_H__INCLUDED_)

#define AFX_RESIZABLEMSGSUPPORT_H__INCLUDED_



#if _MSC_VER > 1000

#pragma once

#endif // _MSC_VER > 1000



typedef struct tagRESIZEPROPERTIES

{

	// wether to ask for resizing properties every time

	BOOL bAskClipping;

	BOOL bAskRefresh;

	// otherwise, use the cached properties

	BOOL bCachedLikesClipping;

	BOOL bCachedNeedsRefresh;



	// initialize with valid data

	tagRESIZEPROPERTIES() : bAskClipping(TRUE), bAskRefresh(TRUE), bCachedLikesClipping(FALSE), bCachedNeedsRefresh(TRUE) {}



} RESIZEPROPERTIES, *PRESIZEPROPERTIES, *LPRESIZEPROPERTIES;





typedef struct tagCLIPPINGPROPERTY

{

	BOOL bLikesClipping;



	// initialize with valid data

	tagCLIPPINGPROPERTY() : bLikesClipping(FALSE) {}



} CLIPPINGPROPERTY, *PCLIPPINGPROPERTY, *LPCLIPPINGPROPERTY;





typedef struct tagREFRESHPROPERTY

{

	BOOL bNeedsRefresh;

	RECT rcOld;

	RECT rcNew;



	// initialize with valid data

	tagREFRESHPROPERTY() : bNeedsRefresh(TRUE), rcOld(), rcNew() {}



} REFRESHPROPERTY, *PREFRESHPROPERTY, *LPREFRESHPROPERTY;





// registered message to communicate with the library

extern const UINT WMU_RESIZESUPPORT;



// if the message is implemented the returned value must be non-zero

// the default window procedure returns zero for unhandled messages



// wParam is one of the following RSZSUP_* values, lParam as specified

enum ResizeSupport

{

	RSZSUP_QUERYPROPERTIES	= 101,	// lParam = LPRESIZEPROPERTIES

	RSZSUP_LIKESCLIPPING	= 102,	// lParam = LPCLIPPINGPROPERTY

	RSZSUP_NEEDSREFRESH		= 103,	// lParam = LPREFRESHPROPERTY

	RSZSUP_SHEETPAGEEXHACK	= 104,	// lParam = HWND (source prop.page)

};



/////////////////////////////////////////////////////////////////////////////

// utility functions



inline BOOL Send_QueryProperties(HWND hWnd, LPRESIZEPROPERTIES pResizeProperties)

{

	return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,

		RSZSUP_QUERYPROPERTIES, (LPARAM)pResizeProperties));

}



inline BOOL Send_LikesClipping(HWND hWnd, LPCLIPPINGPROPERTY pClippingProperty)

{

	return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,

		RSZSUP_LIKESCLIPPING, (LPARAM)pClippingProperty));

}



inline BOOL Send_NeedsRefresh(HWND hWnd, LPREFRESHPROPERTY pRefreshProperty)

{

	return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,

		RSZSUP_NEEDSREFRESH, (LPARAM)pRefreshProperty));

}



inline void Post_SheetPageExHack(HWND hWndSheet, HWND hWndPage)

{

	PostMessage(hWndSheet, WMU_RESIZESUPPORT,

		RSZSUP_SHEETPAGEEXHACK, (LPARAM)hWndPage);

}



#endif // !defined(AFX_RESIZABLEMSGSUPPORT_H__INCLUDED_)