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Articles / Desktop Programming / WTL

Form Designer

26 Jul 2021CPOL24 min read 349.8K   82.5K   230  
Component for adding scriptable forms capabilities to an application.
// MyMacros.h
//
// Author : David Shepherd
//			Copyright (c) 2002, DaeDoe-Software
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_MYMACROS_H__E8847601_2853_11D6_B6A6_856C06A39D46__INCLUDED_)
#define AFX_MYMACROS_H__E8847601_2853_11D6_B6A6_856C06A39D46__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

// safely converts a BSTR to a wide string pointer
#define BSTR2W(s) ( (const wchar_t *) ((s) ? (s) : L"") )

// converts a BOOL to a VARIANT_BOOL
#define B2VB(b) (((b)==FALSE) ? VARIANT_FALSE : VARIANT_TRUE)
// converts a VARIANT_BOOL to a BOOL
#define VB2B(vb) (((vb)==VARIANT_FALSE) ? FALSE : TRUE)

// converts a system color index to an OLE_COLOR value
#define MAKE_OLE_COLOR(ix) (0x80000000 | (ix))

// determines the number of elements in an array
#define NUM_ELEMENTS(array,type) (sizeof(array)/sizeof(type))

// converts a point size to the size in pixels
#define POINT_SIZE_TO_PIXELS(hdc,size)				\
	((GetDeviceCaps((hdc),LOGPIXELSY)*(size))/72)

// determines the aspect ratio of a device context
#define ASPECT_RATIO(dc)							\
	((float)(dc).GetDeviceCaps(LOGPIXELSX)/(dc).GetDeviceCaps(LOGPIXELSY))

// prevents a class from being copied
#define NOCOPY(c)									\
private:											\
	c(const c&)										\
	{}												\
	operator=(const c&)								\
	{}

// begin try catch all block
#define TRY											\
	BOOL Caught=FALSE;								\
	try												\
	{

// end try catch all block
#define CATCH_ALL									\
	}												\
	catch(std::exception &)							\
	{												\
		ATLTRACE(_T("caught(std::exception &)\n"));	\
		ATLASSERT(FALSE);							\
		Caught=TRUE;								\
	}												\
	catch(...)										\
	{												\
		ATLTRACE(_T("caught(...)\n"));				\
		ATLASSERT(FALSE);							\
		Caught=TRUE;								\
	}

// begin standard interface function implementation block
#define IMP_BEGIN									\
	HRESULT RetVal=S_OK;							\
	try												\
	{

// end standard interface function implementation block
#define IMP_END										\
	}												\
	catch(CHResult &hr)								\
	{												\
		ATLTRACE(_T("caught(CHResult &) 0x%08X\n"),	\
			(HRESULT)hr);							\
		RetVal=hr;									\
	}												\
	catch(std::exception &)							\
	{												\
		ATLTRACE(_T("caught(std::exception &)\n"));	\
		ATLASSERT(FALSE);							\
		RetVal=E_UNEXPECTED;						\
	}												\
	catch(...)										\
	{												\
		ATLTRACE(_T("caught(...)\n"));				\
		ATLASSERT(FALSE);							\
		RetVal=E_UNEXPECTED;						\
	}

// standard property request edit implementation
#define REQUEST_EDIT(dispid)						\
	if(!m_nFreezeEvents)							\
	{												\
		if(FireOnRequestEdit(dispid)==S_FALSE)		\
		{											\
			throw CHResult(S_FALSE);				\
		}											\
	}

// standard property change notification implementation
#define PROPERTY_CHANGED(dispid)					\
	SetDirty(TRUE);									\
	if(!m_nFreezeEvents)							\
	{												\
		(void)FireOnChanged(dispid);				\
	}												\
	(void)FireViewChange();							\
	(void)SendOnDataChange(NULL);

#endif // !defined(AFX_MYMACROS_H__E8847601_2853_11D6_B6A6_856C06A39D46__INCLUDED_)

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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