将菜单选项插入ApplicationIcon菜单

5

Windows应用程序在标题栏的左上角有一个图标,位于应用程序名称的左侧。如果单击它,它会显示选项,如还原最小化最大化等。

在许多程序中,它们在那里提供了其他菜单选项(超出Windows提供的默认选项)。如何在C# Winforms中实现这一点?

1个回答

1

有关“在 Windows Forms 应用程序中自定义系统菜单”的教程:

http://www.codeproject.com/KB/dotnet/CustomWinFormSysMenu.aspx

http://www.codeguru.com/csharp/csharp/cs_misc/userinterface/article.php/c9327

代码片段:
导入 user32.dll 来访问所需的函数以更改系统菜单。
[DllImport("user32.dll")]
private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);
[DllImport("user32.dll")]
private static extern bool InsertMenu (IntPtr hMenu, 
    Int32 wPosition, Int32 wFlags, Int32 wIDNewItem, 
    string lpNewItem);

获取当前系统菜单,并向其添加项目:
IntPtr sysMenuHandle = GetSystemMenu(this.Handle, false);
//It would be better to find the position at run time of the 'Close' item, but...

InsertMenu(sysMenuHandle, 5, MF_BYPOSITION | MF_SEPARATOR, 0, string.Empty);
InsertMenu(sysMenuHandle, 6, MF_BYPOSITION , IDM_CUSTOMITEM1, "Item 1");
InsertMenu(sysMenuHandle, 7, MF_BYPOSITION , IDM_CUSTOMITEM2, "Item 2");

public const Int32 WM_SYSCOMMAND = 0x112;
public const Int32 MF_SEPARATOR = 0x800;
public const Int32 MF_BYPOSITION = 0x400;
public const Int32 MF_STRING = 0x0;
public const Int32 IDM_CUSTOMITEM1  = 1000;
public const Int32 IDM_CUSTOMITEM2 = 1001;

捕获新自定义项目的选择,以便为它们分配方法:
protected override void WndProc(ref Message m)
{
    if(m.Msg == WM_SYSCOMMAND)
    {
        switch(m.WParam.ToInt32())
        {
            case IDM_CUSTOMITEM1 : 
                MessageBox.Show("Clicked 'Item 1'");
                return;
            case IDM_CUSTOMITEM1 :
                MessageBox.Show("Clicked 'item 2'");
                return;
            default:
                break;
        } 
    }
    base.WndProc(ref m);
}

你能同时提供那些指令片段和链接吗? - C. Ross

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