ext/ResizableLib/ResizableMsgSupport.h

   1 // ResizableMsgSupport.h: some declarations to support custom resizable wnds
   2 //
   3 /////////////////////////////////////////////////////////////////////////////
   4 //
   5 // Copyright (C) 2000-2002 by Paolo Messina
   6 // (http://www.geocities.com/ppescher - ppescher@yahoo.com)
   7 //
   8 // The contents of this file are subject to the Artistic License (the "License").
   9 // You may not use this file except in compliance with the License.
  10 // You may obtain a copy of the License at:
  11 // http://www.opensource.org/licenses/artistic-license.html
  12 //
  13 // If you find this code useful, credits would be nice!
  14 //
  15 /////////////////////////////////////////////////////////////////////////////
  16
  17 #if !defined(AFX_RESIZABLEMSGSUPPORT_H__INCLUDED_)
  18 #define AFX_RESIZABLEMSGSUPPORT_H__INCLUDED_
  19
  20 #if _MSC_VER > 1000
  21 #pragma once
  22 #endif // _MSC_VER > 1000
  23
  24 typedef struct tagRESIZEPROPERTIES
  25 {
  26         // wether to ask for resizing properties every time
  27         BOOL bAskClipping;
  28         BOOL bAskRefresh;
  29         // otherwise, use the cached properties
  30         BOOL bCachedLikesClipping;
  31         BOOL bCachedNeedsRefresh;
  32
  33         // initialize with valid data
  34         tagRESIZEPROPERTIES() : bAskClipping(TRUE), bAskRefresh(TRUE), bCachedLikesClipping(FALSE), bCachedNeedsRefresh(TRUE) {}
  35
  36 } RESIZEPROPERTIES, *PRESIZEPROPERTIES, *LPRESIZEPROPERTIES;
  37
  38
  39 typedef struct tagCLIPPINGPROPERTY
  40 {
  41         BOOL bLikesClipping = FALSE;
  42 } CLIPPINGPROPERTY, *PCLIPPINGPROPERTY, *LPCLIPPINGPROPERTY;
  43
  44
  45 typedef struct tagREFRESHPROPERTY
  46 {
  47         BOOL bNeedsRefresh = TRUE;
  48         RECT rcOld{};
  49         RECT rcNew{};
  50 } REFRESHPROPERTY, *PREFRESHPROPERTY, *LPREFRESHPROPERTY;
  51
  52
  53 // registered message to communicate with the library
  54 extern const UINT WMU_RESIZESUPPORT;
  55
  56 // if the message is implemented the returned value must be non-zero
  57 // the default window procedure returns zero for unhandled messages
  58
  59 // wParam is one of the following RSZSUP_* values, lParam as specified
  60 enum ResizeSupport
  61 {
  62         RSZSUP_QUERYPROPERTIES  = 101,  // lParam = LPRESIZEPROPERTIES
  63         RSZSUP_LIKESCLIPPING    = 102,  // lParam = LPCLIPPINGPROPERTY
  64         RSZSUP_NEEDSREFRESH             = 103,  // lParam = LPREFRESHPROPERTY
  65         RSZSUP_SHEETPAGEEXHACK  = 104,  // lParam = HWND (source prop.page)
  66 };
  67
  68 /////////////////////////////////////////////////////////////////////////////
  69 // utility functions
  70
  71 inline BOOL Send_QueryProperties(HWND hWnd, LPRESIZEPROPERTIES pResizeProperties)
  72 {
  73         return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,
  74                 RSZSUP_QUERYPROPERTIES, (LPARAM)pResizeProperties));
  75 }
  76
  77 inline BOOL Send_LikesClipping(HWND hWnd, LPCLIPPINGPROPERTY pClippingProperty)
  78 {
  79         return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,
  80                 RSZSUP_LIKESCLIPPING, (LPARAM)pClippingProperty));
  81 }
  82
  83 inline BOOL Send_NeedsRefresh(HWND hWnd, LPREFRESHPROPERTY pRefreshProperty)
  84 {
  85         return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,
  86                 RSZSUP_NEEDSREFRESH, (LPARAM)pRefreshProperty));
  87 }
  88
  89 inline void Post_SheetPageExHack(HWND hWndSheet, HWND hWndPage)
  90 {
  91         PostMessage(hWndSheet, WMU_RESIZESUPPORT,
  92                 RSZSUP_SHEETPAGEEXHACK, (LPARAM)hWndPage);
  93 }
  94
  95 #endif // !defined(AFX_RESIZABLEMSGSUPPORT_H__INCLUDED_)