VB使用手形的图标
Option Explicit
Private Declare Function LoadCursor Lib "user32.dll" Alias "LoadCursorA" (ByVal hInstance As Long, ByVal lpCursorName As Long) As Long
Private Declare Function SetCursor Lib "user32.dll" (ByVal hCursor As Long) As Long
Private Const IDC_HAND As Long = 32649
Private myHand_handle As Long
Private Sub Form_Load()
myHand_handle = LoadCursor(0, IDC_HAND)
End Sub
Private Sub Label1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
If myHand_handle <> 0 Then SetCursor myHand_handle
End Sub
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去年曾写过一篇博文，名称叫《用VB无窗口透明Usercontrol编写透明浮动按钮》，该文有一个观点是错误的，即透明无窗口Usercontrol不支持设计时点选。其实，通过在UserControl_HitTest过程里加入HitResult = vbHitResultHit语句，就可以实现设计时的点选了，为此，修改代码如下：
'* ******************* ......
VB
If MSComm1.PortOpen = True Then MSComm1.PortOpen = False
MSComm1.CommPort = i1
MSComm1.PortOpen = True
MSComm1.InputMode = comInputModeBinary
MSComm1.InBufferCount = 0
& ......
珍贵vb函数列表
Variant 变量的内部表示:
_______________________________________________________________
符号常量 值 内部表示 字节数
V_EMPTY 0 Empty
V_NULL 1 Null
V_INTEGER 2 Interger 2
V_LONG 3 Long 4
V_SINGLE 4 Single 4
V_DOUBLE 5 Double 8
V_CURRENCY 6 Currency 8
V_DATE 7 Date 8
V_STRI ......
Private Sub Command12_Click()
Dim i As Integer
On Error GoTo ABC
ShowPrinterSetup Me
For i = 1 To Adodc1.Recordset.RecordCount
If Picture2.Picture <> LoadPicture("") Then
Printer.PaintPicture Picture2.Picture, 200, Picture1.Top + 1000
Else
......
