frmtip.frm

<Visual Basic 数据库开发实例精粹（第二版）>一书首先介绍了Visual Basic(简称VB)开发的技巧和重点技术

VERSION 5.00
Begin VB.Form frmTip 
   Caption         =   "今日提醒"
   ClientHeight    =   3285
   ClientLeft      =   4605
   ClientTop       =   3975
   ClientWidth     =   5685
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3285
   ScaleWidth      =   5685
   WhatsThisButton =   -1  'True
   WhatsThisHelp   =   -1  'True
   Begin VB.CheckBox chkLoadTipsAtStartup 
      Caption         =   "在启动时显示提示(&S)"
      Height          =   315
      Left            =   120
      TabIndex        =   3
      Top             =   2940
      Width           =   2055
   End
   Begin VB.CommandButton cmdNextTip 
      Caption         =   "下一条提示(&N)"
      Height          =   375
      Left            =   4080
      TabIndex        =   2
      Top             =   600
      Width           =   1455
   End
   Begin VB.PictureBox Picture1 
      BackColor       =   &H00FFFFFF&
      Height          =   2715
      Left            =   120
      Picture         =   "frmTip.frx":0000
      ScaleHeight     =   2655
      ScaleWidth      =   3675
      TabIndex        =   1
      Top             =   120
      Width           =   3735
      Begin VB.Label labPage 
         BackColor       =   &H00FFFFFF&
         Caption         =   "今日提醒..."
         Height          =   255
         Left            =   540
         TabIndex        =   5
         Top             =   180
         Width           =   2655
      End
      Begin VB.Label lblTipText 
         BackColor       =   &H00FFFFFF&
         Height          =   1635
         Left            =   180
         TabIndex        =   4
         Top             =   840
         Width           =   3255
      End
   End
   Begin VB.CommandButton cmdOK 
      Cancel          =   -1  'True
      Caption         =   "确定"
      Default         =   -1  'True
      Height          =   375
      Left            =   4080
      TabIndex        =   0
      Top             =   120
      Width           =   1455
   End
End
Attribute VB_Name = "frmTip"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit


Dim objWarns As CWarnings    '内存中的提示数据库
Dim CurrentTip As Integer    '当前正在显示的提示集合的索引

Private Sub DoNextTip()
    '按顺序遍历提示
    CurrentTip = CurrentTip + 1
    If objWarns.Count < CurrentTip Then
        CurrentTip = 1
    End If
    ' 显示它。
    frmTip.DisplayCurrentTip
End Sub

Private Sub chkLoadTipsAtStartup_Click()
    ' 保存在下次启动时是否显示此窗体
    SaveSetting App.EXEName, "Options", "在启动时显示提示", chkLoadTipsAtStartup.Value
End Sub

Private Sub cmdNextTip_Click()
    DoNextTip
End Sub

Private Sub cmdOK_Click()
    Unload Me
End Sub

Public Sub ShowWarn(ByRef parent As Object, boolCanHide As Boolean)
  Dim oWarns As New CWarnings
  Dim oWarn As New cWarning
  Dim ShowAtStartup As Long
  
  
  ' 察看在启动时是否将被显示
  ShowAtStartup = GetSetting(App.EXEName, "Options", "在启动时显示提示", 1)
  '标识是否可以隐藏此对话框
  If boolCanHide Then
    If ShowAtStartup = 0 Then
        Exit Sub
    End If
  End If
  
  Me.chkLoadTipsAtStartup.Value = ShowAtStartup
  
  Set objWarns = oWarns.Findbydate(Year(Date), Month(Date), Day(Date), True)
  If objWarns.Count = 0 Then
    oWarn.Msg = "没有今日提醒……"
    oWarns.Add oWarn
    'Exit Sub
  End If
    
  CurrentTip = 1
  Call DisplayCurrentTip
  Me.Show vbModeless, parent
  'Me.Show vbModal, parent
    
  Set oWarns = Nothing
  
End Sub

Public Sub DisplayCurrentTip()
    If objWarns.Count > 0 Then
        labPage.Caption = "今日提醒... 第" & CurrentTip & "条/共" & objWarns.Count & "条"
        lblTipText.Caption = objWarns.Item(CurrentTip).Msg
    End If
End Sub