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最新推荐文章于 2019-06-26 11:37:56 发布

Chasen_y

最新推荐文章于 2019-06-26 11:37:56 发布

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CC 4.0 BY-SA版权

分类专栏： MFC

本文链接：https://blog.youkuaiyun.com/ycs34082419900527/article/details/72725369

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本文介绍了一种基于C++的图形界面中实现选择功能的方法。通过定义矩形区域并检查鼠标点击位置是否位于这些区域内来确定选择状态。此外，还展示了如何在不同矩形之间进行切换，并更新相关字段。

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CRect rect,rect1;
		CPoint pt;
		int k,dx,dy;
		pt.x = X;
		pt.y = Y;
		TCHAR service_id[TRAIN_ORDER_LEN];//
		TCHAR local_sub_id[LOCAL_SUB_ID_LEN];
		TCHAR destcode[DESTCODE_LEN];

	/*
		for(int j=0;j<ln.rec_cn;j++)
		{
			rec = &ln.psta[j];
			if(rec == NULL) return;
			k = j+1;					
			while(k<ln.rec_cn)
			{
				if(!ln.psta[k].notShow)
				{
					rec1 = &ln.psta[k];
					break;
				}
				k++;
			}			
			rect.left = rec->pt_a.x-4;
			rect.right = rec->pt_d.x+4;
			rect.top = rec->pt_a.y-4;
			rect.bottom = rect.top+8;
			if(PtInRect(rect,pt))//select
			{
				_tcsncpy(service_id,&rec->train_order_id[max(0,TRAIN_ORDER_LEN-pDoc->m_display_trainWidth-1)], min(TRAIN_ORDER_LEN, pDoc->m_display_trainWidth+1));
				_tcsncpy(local_sub_id,&rec->local_sub_id[max(0,LOCAL_SUB_ID_LEN-pDoc->m_display_localSubIdWidth-1)], min(LOCAL_SUB_ID_LEN, pDoc->m_display_localSubIdWidth+1));
				_tcsncpy(destcode,&rec->destcode[max(0,DESTCODE_LEN-pDoc->m_display_destcodeWidth-1)], min(DESTCODE_LEN, pDoc->m_display_destcodeWidth+1));
				pCopyTrip->m_strService.Format("%s",service_id);
				pCopyTrip->m_strSubid.Format("%s",local_sub_id);
				pCopyTrip->m_strDestcode.Format("%s",destcode);
				pCopyTrip->UpdateData(FALSE);
				return ;
			}
			else
			{
				dx = rec1->pt_a.x-rec->pt_d.x;
				dy = rec1->pt_a.y-rec->pt_d.y;
				rect1.left = rect.right-8;
				rect1.right = rect.right;
				for(k=0;k<dx;k++)
				{
					rect1.left++;
					rect1.right++;
					rect1.top = rect.top+(rect1.right-rect.right)*dy/dx-4;
					rect1.bottom = rect.top+(rect1.right-rect.right)*dy/dx+4;
					if(PtInRect(rect1,pt))//select
					{
						_tcsncpy(service_id,&rec->train_order_id[max(0,TRAIN_ORDER_LEN-pDoc->m_display_trainWidth-1)], min(TRAIN_ORDER_LEN, pDoc->m_display_trainWidth+1));
						_tcsncpy(local_sub_id,&rec->local_sub_id[max(0,LOCAL_SUB_ID_LEN-pDoc->m_display_localSubIdWidth-1)], min(LOCAL_SUB_ID_LEN, pDoc->m_display_localSubIdWidth+1));
						_tcsncpy(destcode,&rec->destcode[max(0,DESTCODE_LEN-pDoc->m_display_destcodeWidth-1)], min(DESTCODE_LEN, pDoc->m_display_destcodeWidth+1));
						pCopyTrip->m_strService.Format("%s",service_id);
						pCopyTrip->m_strSubid.Format("%s",local_sub_id);
						pCopyTrip->m_strDestcode.Format("%s",destcode);
						pCopyTrip->UpdateData(FALSE);
						return;
					}
				}
			}
		}*/