如何:定义工具栏按钮的图标
ToolBar 按钮能自身中显示图标,以便用户识别。 具体的实现方法是,向 ImageList 组件(Windows 窗体) 组件添加图像,然后将 ImageList 组件与 ToolBar 控件关联起来。
以编程方式设置工具栏按钮的图标
在同一过程中,向 ImageList 组件分配一个图像。
在同一过程中,向 ToolBar 控件分配 ImageList 控件,然后分配各个工具栏按钮的 ImageIndex 属性。
在下面的代码示例中,图标位置的路径设置是**“My Documents”**文件夹。 这样做是因为可假定大多数运行 Windows 操作系统的计算机都包含此目录。 这还将允许具有最低系统访问级别的用户安全地运行应用程序。 下面的示例假定一个已添加了 PictureBox 控件的窗体。
按照上述步骤,您应该已经编写出类似于下面显示的代码。
Public Sub InitializeMyToolBar() ' Instantiate an ImageList component and a ToolBar control. Dim ToolBar1 as New ToolBar Dim ImageList1 as New ImageList ' Assign an image to the ImageList component. ' You should replace the bold image ' in the sample below with an icon of your own choosing. Dim myImage As System.Drawing.Image = _ Image.FromFile Image.FromFile _ (System.Environment.GetFolderPath _ (System.Environment.SpecialFolder.Personal) _ & "\Image.gif") ImageList1.Images.Add(myImage) ' Create a ToolBarButton. Dim ToolBarButton1 As New ToolBarButton() ' Add the ToolBarButton to the ToolBar. ToolBar1.Buttons.Add(toolBarButton1) ' Assign an ImageList to the ToolBar. ToolBar1.ImageList = ImageList1 ' Assign the ImageIndex property of the ToolBarButton. ToolBarButton1.ImageIndex = 0 End Sub
public void InitializeMyToolBar() { // Instantiate an ImageList component and a ToolBar control. ToolBar toolBar1 = new ToolBar(); ImageList imageList1 = new ImageList(); // Assign an image to the ImageList component. // You should replace the bold image // in the sample below with an icon of your own choosing. // Note the escape character used (@) when specifying the path. Image myImage = Image.FromFile (System.Environment.GetFolderPath (System.Environment.SpecialFolder.Personal) + @"\Image.gif"); imageList1.Images.Add(myImage); // Create a ToolBarButton. ToolBarButton toolBarButton1 = new ToolBarButton(); // Add the ToolBarButton to the ToolBar. toolBar1.Buttons.Add(toolBarButton1); // Assign an ImageList to the ToolBar. toolBar1.ImageList = imageList1; // Assign ImageIndex property of the ToolBarButton. toolBarButton1.ImageIndex = 0; }
public: void InitializeMyToolBar() { // Instantiate an ImageList component and a ToolBar control. ToolBar ^ toolBar1 = gcnew ToolBar(); ImageList ^ imageList1 = gcnew ImageList(); // Assign an image to the ImageList component. // You should replace the bold image // in the sample below with an icon of your own choosing. Image ^ myImage = Image::FromFile(String::Concat (System::Environment::GetFolderPath (System::Environment::SpecialFolder::Personal), "\\Image.gif")); imageList1->Images->Add(myImage); // Create a ToolBarButton. ToolBarButton ^ toolBarButton1 = gcnew ToolBarButton(); // Add the ToolBarButton to the ToolBar. toolBar1->Buttons->Add(toolBarButton1); // Assign an ImageList to the ToolBar. toolBar1->ImageList = imageList1; // Assign ImageIndex property of the ToolBarButton. toolBarButton1->ImageIndex = 0; }