listctrl.cpp

来自「一个更为先进的嵌入式操作系统.采用RMS线程调度算法,具有信号量等同步对象.亦包」· C++ 代码 · 共 62 行

#include "gos.h"
#include "list.h"
#include "listctrl.h"

CListCtrl::CListCtrl(void)
{
	m_posVisible=NULL;
	m_posSelect=NULL;
}

CListCtrl::~CListCtrl(void)
{
}

LRESULT CListCtrl::MsgProc(UINT message, WPARAM wParam, LPARAM lParam)
{
	switch(message)
	{
	case WM_ERASEBKGND:
		GetScreen()->OnEraseBkgnd((CDC*)wParam);
		break;
	case WM_PAINT:
		OnPaint((CDC*)wParam);
		break;
	case WM_DRAWITEM:
		break;
	default:
		wParam=CWnd::MsgProc(message,wParam,lParam);
	}
	return wParam;
}

void CListCtrl::OnPaint(CDC* pDC)
{
	POSITION pos;
	CRect r;
	for(pos=m_posVisible;pos;m_lst.GetNext(pos))
	{
	}
}

PVOID CListCtrl::GetVisibleItem(POSITION& pos)
{
	LPVOID pData;
	if(pos)
		pData=m_lst.GetNext(pos);
	else
	{
		pos=m_posVisible;
		pData=m_lst.GetAt(pos);
	}
	return pData;
}

PVOID CListCtrl::GetSelectedItem(POSITION& pos)
{
	pos=m_posSelect;
	if(!pos)return NULL;
	return m_lst.GetAt(pos);
}