#include <mdiwin/clipbrd.hpp>

Clipboard::Clipboard(HWND hOwnerWnd)
: mhOwnerWnd(hOwnerWnd), mhNextViewerWnd(0)
{
	if(!mhOwnerWnd)return;
	mhNextViewerWnd=::SetClipboardViewer(mhOwnerWnd);
}

Clipboard::~Clipboard()
{
	if(!isOkay())return;
	::ChangeClipboardChain(mhOwnerWnd,mhNextViewerWnd);
}

void Clipboard::changeClipboardChain(WORD message,WPARAM wParam,LPARAM lParam)
{
	if(!isOkay())return;
	if((HWND)wParam==mhNextViewerWnd)mhNextViewerWnd=(HWND)LOWORD(lParam);
	else ::SendMessage(mhNextViewerWnd,message,wParam,lParam);
}

WORD Clipboard::drawClipboard(WORD message,WPARAM wParam,LPARAM lParam)
{
	if(!isOkay())return FALSE;
	::SendMessage(mhNextViewerWnd,message,wParam,lParam);
	handleClipboardData();
	return TRUE;
}

void Clipboard::handleClipboardData(void)const
{
#if 0
	HGLOBAL hGlobalClipboard(0);
	BITMAPINFO FAR *lpSourceBitmapInfo;
	RGBQUAD FAR *lpRGBQuad;
	BYTE FAR *lpDataBytes;

	::OpenClipboard(mhOwnerWnd);
	hGlobalClipboard=::GetClipboardData(CF_DIB);
	if(hGlobalClipboard)
	{
		lpSourceBitmapInfo=(BITMAPINFO FAR *)::GlobalLock(hGlobalClipboard);
		if(lpSourceBitmapInfo->bmiHeader.biBitCount==8)
		{
			lpRGBQuad=(RGBQUAD FAR *)((char FAR *)lpSourceBitmapInfo+sizeof(BITMAPINFOHEADER));
			lpDataBytes=(BYTE FAR *)((BYTE FAR *)lpSourceBitmapInfo+(sizeof(BITMAPINFOHEADER)*256));
		}
		::GlobalUnlock(hGlobalClipboard);
	}
	::CloseClipboard();
#endif
}