如何判断RichTextBox中是否出现了滚动条?请进 Richtextbox属性值ScrollBars=rtfVertical,载入文件内容到RichTextBox中,如何判断RichTextBox中是否出现了滚动条. 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 不知道这个对你有没有用:http://topic.csdn.net/u/20080416/11/baf25fc0-a4a3-4e0b-9904-dbddc24ed1d7.html GetScrollrange这个函数不知道可不可以?还有GetScrollPos这个函数??? '添加 Command1 RichTextBox1Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As LongConst EM_GETFIRSTVISIBLELINE = &HCEConst WM_VSCROLL = &H115Const SB_LINEUP = 0Const SB_LINEDOWN = 1Dim NewStr$, OldStr&Private Sub Form_Load() RichTextBox1.Text = "" For i = 1 To 60 '你故意弄少一点就没滚动条 RichTextBox1.Text = RichTextBox1.Text & i & vbCrLf NextEnd SubPrivate Sub Command1_Click() OldStr = Format$(SendMessage(RichTextBox1.hwnd, EM_GETFIRSTVISIBLELINE, 0, 0)) Call SendMessage(RichTextBox1.hwnd, WM_VSCROLL, SB_LINEDOWN, 0) NewStr = Format$(SendMessage(RichTextBox1.hwnd, EM_GETFIRSTVISIBLELINE, 0, 0)) Call SendMessage(RichTextBox1.hwnd, WM_VSCROLL, SB_LINEUP, 0) MsgBox IIf(NewStr <> OldStr, "有滚动条", "没有滚动条")End Sub vb怎么控制鼠标右键 --VB怎么操控EXCEL表格--?? 我做的一个发送手机短信的软件. 求flexcell for .net 3.0版的标准版及注册码。 用Open "LPT1:" For Output As #1 进行打印,如何使LQ680k打印机退纸? UltraEdit高手帮帮我 我想拜师学VB,最好是长沙的哥哥,姐姐. 使用标准的EXE 开发 B/S 工程 ,但不用浏览器,当我修改界面,客户端所有程序界面自动修改! 如何实现 如何建立连接库? 也许是个简单的问题!!! 求实现一种特殊的四则计算器 【求助】将黑白BMP(数据压缩过)直接读取到数组中,不要用控件和api
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Const EM_GETFIRSTVISIBLELINE = &HCE
Const WM_VSCROLL = &H115
Const SB_LINEUP = 0
Const SB_LINEDOWN = 1
Dim NewStr$, OldStr&
Private Sub Form_Load()
RichTextBox1.Text = ""
For i = 1 To 60 '你故意弄少一点就没滚动条
RichTextBox1.Text = RichTextBox1.Text & i & vbCrLf
Next
End SubPrivate Sub Command1_Click()
OldStr = Format$(SendMessage(RichTextBox1.hwnd, EM_GETFIRSTVISIBLELINE, 0, 0))
Call SendMessage(RichTextBox1.hwnd, WM_VSCROLL, SB_LINEDOWN, 0)
NewStr = Format$(SendMessage(RichTextBox1.hwnd, EM_GETFIRSTVISIBLELINE, 0, 0))
Call SendMessage(RichTextBox1.hwnd, WM_VSCROLL, SB_LINEUP, 0)
MsgBox IIf(NewStr <> OldStr, "有滚动条", "没有滚动条")
End Sub