IToolboxUser.GetToolSupported 方法

获取一个值，该值指示当前设计器是否支持指定工具。

**命名空间:**System.Drawing.Design
**程序集:**System.Drawing（在 system.drawing.dll 中）

语法

声明
Function GetToolSupported ( _
    tool As ToolboxItem _
) As Boolean
用法
Dim instance As IToolboxUser
Dim tool As ToolboxItem
Dim returnValue As Boolean

returnValue = instance.GetToolSupported(tool)

bool GetToolSupported (
    ToolboxItem tool
)

bool GetToolSupported (
    ToolboxItem^ tool
)

boolean GetToolSupported (
    ToolboxItem tool
)

function GetToolSupported (
    tool : ToolboxItem
) : boolean

参数

• tool
  要进行工具箱支持测试的 ToolboxItem。

返回值

如果工具箱支持该工具而且该工具可启用，则为 true；如果该文档设计器不知道如何使用该工具，则为 false。

备注

如果实现 IToolboxUser 接口的设计器支持指定的工具，那么当此设计器被选中时将在工具箱中启用该工具。否则将被禁用。某个工具标记为启用或禁用后，无法再次对其进行同一设计器的支持测试。

示例

下面的代码示例演示 GetToolSupported 方法的实现。

' This method can signal whether to enable or disable the specified
' ToolboxItem when the component associated with this designer is selected.
Function GetToolSupported(ByVal tool As ToolboxItem) As Boolean Implements IToolboxUser.GetToolSupported
    ' Search the blocked type names array for the type name of the tool
    ' for which support for is being tested. Return false to indicate the
    ' tool should be disabled when the associated component is selected.
    Dim i As Integer
    For i = 0 To blockedTypeNames.Length - 1
        If tool.TypeName = blockedTypeNames(i) Then
            Return False
        End If
    Next i ' Return true to indicate support for the tool, if the type name of the
    ' tool is not located in the blockedTypeNames string array.
    Return True
End Function

// This method can signal whether to enable or disable the specified
// ToolboxItem when the component associated with this designer is selected.
bool IToolboxUser.GetToolSupported(ToolboxItem tool)
{       
    // Search the blocked type names array for the type name of the tool
    // for which support for is being tested. Return false to indicate the
    // tool should be disabled when the associated component is selected.
    for( int i=0; i<blockedTypeNames.Length; i++ )
        if( tool.TypeName == blockedTypeNames[i] )
            return false;
    
    // Return true to indicate support for the tool, if the type name of the
    // tool is not located in the blockedTypeNames string array.
    return true;
}

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

IToolboxUser 接口
IToolboxUser 成员
System.Drawing.Design 命名空间
ToolboxItem