cLogs Methods Reference

📝 Logging Methods

Data

Logs content (default property, supports chainable calls).

Public Function Data(ByVal LogContent As String, Optional ByVal LogTitle As String, Optional LogLevel As EnumLogLevel = LvInfo) As cLogs

Parameters:

• LogContent - Log content
• LogTitle - Log title (optional)
• LogLevel - Log level (default LvInfo)

Returns: Returns self instance for chainable calls

Example:

Dim Log As New cLogs

' Basic usage
Log.Data "System started"

' With title
Log.Data "Connection successful", "Database"

' Specify level
Log.Data "Memory low", "System", LvWarn

' Chainable call
Log.Data("First").Data("Second").Data("Third")

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DataLine

Logs content with line break.

Public Function DataLine(ByVal LogContent As String, Optional ByVal LogTitle As String, Optional LogLevel As EnumLogLevel = LvInfo) As cLogs

Description: Auto adds line break vbCrLf at end of content

Example:

Log.DataLine "Error details:"
Log.DataLine "  File: Form1.frm"
Log.DataLine "  Line: 156"
Log.Save

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Save

Writes cached logs to file.

Public Function Save() As cLogs

Description:

• Writes all cached logs from CacheDatas to file
• Decides filename based on LogFileNameRule
• Auto creates directory structure
• Clears cache

Example:

' Batch log then save once
Log.Data "Event 1"
Log.Data "Event 2"
Log.Data "Event 3"
Log.Save

' Chainable写法
Log.Data("Event 1").Data("Event 2").Data("Event 3").Save

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🔄 Channel Output Methods

ToFormView

Outputs to form ListBox control.

Public Function ToFormView(LogStr As String, Optional LogLevel As EnumLogLevel) As String

Prerequisite: Must set FormListBox property

Example:

' Set target ListBox
Set Log.FormListBox = Form1.List1
Log.FormListBoxMaxItem = 500  ' Max items to keep

' Output log
Log.ToFormView "Real-time message"

' Or auto trigger after Data (if SendToFormView=True)
Log.SendToFormView = True
Log.Data "Auto output to ListBox"

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ToDbgView

Outputs to DbgView tool.

Public Function ToDbgView(LogStr As String, Optional LogLevel As EnumLogLevel) As String

Description: Uses Windows API OutputDebugString to output

DbgView Filter Settings:

Include: VBMAN LOG DATA*

Example:

Log.SendToDbgView = True
Log.Data "Debug info", "DEBUG", LvDebugger
' DbgView shows: VBMAN LOG DATA：::[time] [DEBUGGER] DEBUG Debug info

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ToWebView

Outputs to web remote debugging.

Public Function ToWebView(LogStr As String, Optional LogLevel As EnumLogLevel) As String

Prerequisite: Must set WebUserCode

Usage Steps:

1. Visit http://log.vb6.pro to get user code
2. Set Log.WebUserCode = "your-code"
3. Enable Log.SendToWebView = True
4. View logs in real-time on web

Example:

Log.WebUserCode = "abc123"
Log.SendToWebView = True
Log.Data "Remote debug info"

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🎛️ Control Methods

View

Controls log viewer window show/hide (chainable).

Public Function View(Value As Boolean) As cLogs

Example:

Log.View(True).Data("Show window and log").Save

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HostApp

Sets host application object (chainable).

Public Function HostApp(o As Object) As cLogs

Description: Used to get program path, defaults to auto-set App object

Example:

Log.HostApp(App).Data("Log").Save

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📊 Log Levels

EnumLogLevel Enum

Level	Value	Constant	Description
LvInfo	0	INFO	General info
LvWarn	1	WARN	Warning info
LvDanger	2	DANGER	Danger info
LvError	3	ERROR	Error info
LvDebugger	4	DEBUGGER	Debug info
LvCustom	5	CUSTOM	Custom level

Log Level Control

Dim Log As New cLogs

' Set control level (only log WARN and above)
Log.LogLevelControl = LvWarn

Log.Data "General info", , LvInfo     ' Ignored (0 < 1)
Log.Data "Warning info", , LvWarn     ' Logged (1 >= 1)
Log.Data "Error info", , LvError      ' Logged (3 >= 1)
Log.Save

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Last Updated: 2026-05-17