initial support for custom windows

ResizableLib/ResizableMsgSupport.h

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+// ResizableMsgSupport.h: some declarations to support custom resizable wnds
+//
+/////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (C) 2000-2002 by Paolo Messina
+// (http://www.geocities.com/ppescher - [email protected])
+//
+// The contents of this file are subject to the Artistic License (the "License").
+// You may not use this file except in compliance with the License. 
+// You may obtain a copy of the License at:
+// http://www.opensource.org/licenses/artistic-license.html
+//
+// 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) {}
+
+} 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) {}
+
+} REFRESHPROPERTY, *PREFRESHPROPERTY, *LPREFRESHPROPERTY;
+
+
+#endif // !defined(AFX_RESIZABLEMSGSUPPORT_H__INCLUDED_)

ResizableLib/ResizableMsgSupport.inl

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+// ResizableMsgSupport.inl: some definitions to support custom resizable wnds
+//
+/////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (C) 2000-2002 by Paolo Messina
+// (http://www.geocities.com/ppescher - [email protected])
+//
+// The contents of this file are subject to the Artistic License (the "License").
+// You may not use this file except in compliance with the License. 
+// You may obtain a copy of the License at:
+// http://www.opensource.org/licenses/artistic-license.html
+//
+// If you find this code useful, credits would be nice!
+//
+/////////////////////////////////////////////////////////////////////////////
+
+
+// registered message to communicate with the library
+// (defined so that in the same executable it is initialized only once)
+const UINT WMU_RESIZESUPPORT = ::RegisterWindowMessage(_T("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
+
+#define RSZSUP_QUERYPROPERTIES	101	// lParam = LPRESIZEPROPERTIES
+
+#define RSZSUP_LIKESCLIPPING	102	// lParam = LPCLIPPINGPROPERTY
+
+#define RSZSUP_NEEDSREFRESH		103	// lParam = LPREFRESHPROPERTY
+
+
+/////////////////////////////////////////////////////////////////////////////
+// utility functions
+
+inline BOOL Send_QueryProperties(HWND hWnd, LPRESIZEPROPERTIES pResizeProperties)
+{
+	ASSERT(::IsWindow(hWnd));
+	return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,
+		RSZSUP_QUERYPROPERTIES, (LPARAM)pResizeProperties));
+}
+
+inline BOOL Send_LikesClipping(HWND hWnd, LPCLIPPINGPROPERTY pClippingProperty)
+{
+	ASSERT(::IsWindow(hWnd));
+	return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,
+		RSZSUP_LIKESCLIPPING, (LPARAM)pClippingProperty));
+}
+
+inline BOOL Send_NeedsRefresh(HWND hWnd, LPREFRESHPROPERTY pRefreshProperty)
+{
+	ASSERT(::IsWindow(hWnd));
+	return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,
+		RSZSUP_NEEDSREFRESH, (LPARAM)pRefreshProperty));
+}