unless you specify adata typefor the array, the data type of the elements in a declared array isVariant. Each numericVariantelement of the array uses 16 bytes. Each stringVariantelement uses 22 bytes. To write code that is as compact as possible, explicitly declare your arrays to be of a...
Sub Two_Array_Example() Dim Student(1 To 5, 1 To 3) As String End Sub We have structured student names, marks, and grade status data. Now, come back to the coding window. Declare two more variables for a loop. Code: Sub Two_Array_Example() Dim Student(1 To 5, 1 To 3) As ...
This is not the same thing as a zero-length string ("").ExampleThis example shows how the Declare statement is used at the module level of a standard module to declare a reference to an external procedure in a dynamic-link library (DLL). You can place the Declare statements in class ...
Public Declare Function VarPtrArray Lib "msvbvm60.dll" Alias "VarPtr" (ByRef Var() As Any) As Long VarPtrArray 返回的并不是SafeArray的地址,我们可以进行测试: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 Sub TestArray() Dim Arr() As Byte ReDim Arr(3) As Byte Dim sa As SafeArr...
ThevbNullStringconstant is used when calling external procedures, where the external procedure requires a string whose value is zero. This is not the same thing as a zero-length string (""). Example This example shows how theDeclarestatement is used at the module level of a standard module ...
ParamArray修饰的参数，本身可不传递参数啊，这不就是Optional关键字的意思了么。再者，它把数组展开，直接进行传递，多形象直观啊！尤其是，动态调用API，形式上与Declare方式也很像呀，容易理解和检查。但是，无论是直接使用Variant传递参数数组，还是使用ParamArray关键字传递不定数参数，都必须对Variant有深入地理解。
'Create a FileDialog objectasa File Picker dialog box.Set fd=Application.FileDialog(msoFileDialogFilePicker)'Declare a variable to contain the path 'ofeach selected item.Even though the path is aString,'the variable must be a Variant because For Each...Next ...
You can also use thePublicstatement with empty parentheses to declare a dynamic array. 声明动态数组后,在过程中使用ReDim语句来定义数组中的维度和元素数。 如果尝试为在Private、Public或Dim语句中显式指定其大小的数组变量重新声明维度,则会发生错误。
Variant、 Byte 、 Boolean 、 Integer 、 Long 、 Single 、 Double 、 Currency 、 Decimal 、 Date 、 Object 和 String 。 定义对象变量 使用Dim、Private、Static、Public声明对象,(用Dim声明的模块级变量都默认为Private的) ' Declare MyObject as Variant data type.DimMyObject' Declare MyObject as Objec...
Public Declare PtrSafe Sub Sleep Lib"kernel32"(ByVal dwMilliseconds As LongPtr)SubCopyAndMultiplyDataWithPause2()Dim sourceRange As Range Dim destinationRange As Range Dim multiplyRange As Range Dim resultRange As Range Dim i As Integer