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) {}
  35
  36 } RESIZEPROPERTIES, *PRESIZEPROPERTIES, *LPRESIZEPROPERTIES;
  37
  38
  39 typedef struct tagCLIPPINGPROPERTY
  40 {
  41         BOOL bLikesClipping;
  42
  43         // initialize with valid data
  44         tagCLIPPINGPROPERTY() : bLikesClipping(FALSE) {}
  45
  46 } CLIPPINGPROPERTY, *PCLIPPINGPROPERTY, *LPCLIPPINGPROPERTY;
  47
  48
  49 typedef struct tagREFRESHPROPERTY
  50 {
  51         BOOL bNeedsRefresh;
  52         RECT rcOld;
  53         RECT rcNew;
  54
  55         // initialize with valid data
  56         tagREFRESHPROPERTY() : bNeedsRefresh(TRUE) {}
  57
  58 } REFRESHPROPERTY, *PREFRESHPROPERTY, *LPREFRESHPROPERTY;
  59
  60
  61 // registered message to communicate with the library
  62 extern const UINT WMU_RESIZESUPPORT;
  63
  64 // if the message is implemented the returned value must be non-zero
  65 // the default window procedure returns zero for unhandled messages
  66
  67 // wParam is one of the following RSZSUP_* values, lParam as specified
  68 enum ResizeSupport
  69 {
  70         RSZSUP_QUERYPROPERTIES  = 101,  // lParam = LPRESIZEPROPERTIES
  71         RSZSUP_LIKESCLIPPING    = 102,  // lParam = LPCLIPPINGPROPERTY
  72         RSZSUP_NEEDSREFRESH             = 103,  // lParam = LPREFRESHPROPERTY
  73         RSZSUP_SHEETPAGEEXHACK  = 104,  // lParam = HWND (source prop.page)
  74 };
  75
  76 /////////////////////////////////////////////////////////////////////////////
  77 // utility functions
  78
  79 inline BOOL Send_QueryProperties(HWND hWnd, LPRESIZEPROPERTIES pResizeProperties)
  80 {
  81         return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,
  82                 RSZSUP_QUERYPROPERTIES, (LPARAM)pResizeProperties));
  83 }
  84
  85 inline BOOL Send_LikesClipping(HWND hWnd, LPCLIPPINGPROPERTY pClippingProperty)
  86 {
  87         return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,
  88                 RSZSUP_LIKESCLIPPING, (LPARAM)pClippingProperty));
  89 }
  90
  91 inline BOOL Send_NeedsRefresh(HWND hWnd, LPREFRESHPROPERTY pRefreshProperty)
  92 {
  93         return (0 != SendMessage(hWnd, WMU_RESIZESUPPORT,
  94                 RSZSUP_NEEDSREFRESH, (LPARAM)pRefreshProperty));
  95 }
  96
  97 inline void Post_SheetPageExHack(HWND hWndSheet, HWND hWndPage)
  98 {
  99         PostMessage(hWndSheet, WMU_RESIZESUPPORT,
 100                 RSZSUP_SHEETPAGEEXHACK, (LPARAM)hWndPage);
 101 }
 102
 103 #endif // !defined(AFX_RESIZABLEMSGSUPPORT_H__INCLUDED_)