VB NAO DOCUMENTADO NEM NADA : !!!
Onde posso conseguir informações de comandos "não documentados" do VB ??
Gostaria de conhecer todos os comando possiveis... Pois existem muitos comandos uteis , que as vezes (maioria) não conhecemos.
Nunca achei nada sobre esses comando, por favor se alguem souber me diga ;;;
Estou me aprofundando no VB to precisando muito disso !!!
Obrigado.
Gostaria de conhecer todos os comando possiveis... Pois existem muitos comandos uteis , que as vezes (maioria) não conhecemos.
Nunca achei nada sobre esses comando, por favor se alguem souber me diga ;;;
Estou me aprofundando no VB to precisando muito disso !!!
Obrigado.
Só um detalhe, as funções acima citada são todas muito bem documentadas.
Quanto a achar documentação para os comandos não documentados ... ? Releia essa frase e as de concluir que é impossÃvel, pois no momento em que vc achar a documentação, o comando deixa de ser não documentado... :-P
Quanto a achar documentação para os comandos não documentados ... ? Releia essa frase e as de concluir que é impossÃvel, pois no momento em que vc achar a documentação, o comando deixa de ser não documentado... :-P
Dá uma pesquisada no google (http://www.google.com.br)
Tudo bem amigo, olha é verdade que o VB tem várias funções não documentadas, as que vc citou na minha opinião não estão entre elas por exemplo
Open ... ...
No MSDN:
The File System Object model does not provide binary file creation or access methods. If you need to create or read binary files, this information will help you do so.
Binary access gives you complete control over a file, because the bytes in the file can represent anything. For example, you can conserve disk space by building variable-length records. Use binary access when it is important to keep file size small.
Note When writing binary data to a file, use a variable that is an array of the Byte data type, instead of a String variable. Strings are assumed to contain characters, and binary data may not be properly stored in String variables.
Opening a File for Binary Access
To open a file for binary access, use the following syntax for the Open statement:
Open pathname For Binary As filenumber
As you can see, Open for binary access differs from Open for random access in that Len = reclength is not specified. If you include a record length in a binary-access Open statement, it is ignored.
Storing Information in Variable-Length Fields
To best appreciate binary access, consider a hypothetical Employee Records file. This file uses fixed-length records and fields to store information about employees.
Type Person
ID As Integer
MonthlySalary As Currency
LastReviewDate As Long
FirstName As String * 15
LastName As String * 15
Title As String * 15
ReviewComments As String * 150
End Type
Regardless of the actual contents of the fields, every record in that file takes 209 bytes.
You can minimize the use of disk space by using binary access. Because this doesn’t require fixed-length fields, the type declaration can omit the string length parameters.
Type Person
ID As Integer
MonthlySalary As Currency
LastReviewDate As Long
FirstName As String
LastName As String
Title As String
ReviewComments As String
End Type
Public Empl As Person ' Defines a record.
Each employee record in the Employee Records file now stores only the exact number of bytes required because the fields are variable-length. The drawback to binary input/output with variable-length fields is that you can’t access records randomly  you must access records sequentially to learn the length of each record. You can seek directly to a specified byte position in a file, but there is no direct way to know which record is at which byte position if the records are of variable length.
For More Information For additional information on binary file access, see "Open Statement."
O TypeOf vai te retornar o Type de um objeto tipo:
Dim ctl As Control
For Each ctl In Me.Controls
If (TypeOf ctl Is TextBox) Or (TypeOf ctl Is OptionButton) Or (TypeOf ctl Is ComboBox) Then
ctl.Enabled = False
End If
Next ctl
Etc... Etc..
Open ... ...
No MSDN:
The File System Object model does not provide binary file creation or access methods. If you need to create or read binary files, this information will help you do so.
Binary access gives you complete control over a file, because the bytes in the file can represent anything. For example, you can conserve disk space by building variable-length records. Use binary access when it is important to keep file size small.
Note When writing binary data to a file, use a variable that is an array of the Byte data type, instead of a String variable. Strings are assumed to contain characters, and binary data may not be properly stored in String variables.
Opening a File for Binary Access
To open a file for binary access, use the following syntax for the Open statement:
Open pathname For Binary As filenumber
As you can see, Open for binary access differs from Open for random access in that Len = reclength is not specified. If you include a record length in a binary-access Open statement, it is ignored.
Storing Information in Variable-Length Fields
To best appreciate binary access, consider a hypothetical Employee Records file. This file uses fixed-length records and fields to store information about employees.
Type Person
ID As Integer
MonthlySalary As Currency
LastReviewDate As Long
FirstName As String * 15
LastName As String * 15
Title As String * 15
ReviewComments As String * 150
End Type
Regardless of the actual contents of the fields, every record in that file takes 209 bytes.
You can minimize the use of disk space by using binary access. Because this doesn’t require fixed-length fields, the type declaration can omit the string length parameters.
Type Person
ID As Integer
MonthlySalary As Currency
LastReviewDate As Long
FirstName As String
LastName As String
Title As String
ReviewComments As String
End Type
Public Empl As Person ' Defines a record.
Each employee record in the Employee Records file now stores only the exact number of bytes required because the fields are variable-length. The drawback to binary input/output with variable-length fields is that you can’t access records randomly  you must access records sequentially to learn the length of each record. You can seek directly to a specified byte position in a file, but there is no direct way to know which record is at which byte position if the records are of variable length.
For More Information For additional information on binary file access, see "Open Statement."
O TypeOf vai te retornar o Type de um objeto tipo:
Dim ctl As Control
For Each ctl In Me.Controls
If (TypeOf ctl Is TextBox) Or (TypeOf ctl Is OptionButton) Or (TypeOf ctl Is ComboBox) Then
ctl.Enabled = False
End If
Next ctl
Etc... Etc..
João, o MSDN é realmente uma ótima documentação, mas nem tudo está lá... existem muitas funções realmente não documentadas.
Bom pessoal, não quiz gerar polêmica (o topico nem é meu!!!), se vcs tão dizendo que tem todas as funções do VB documentadas... por mim tá beleza, eu não tenho tempo de conferir msm... :-)
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