气球WinApi弹出窗口中的非ascii字符

Question

我试图显示一个带有Unicode文本的气球弹出窗口，但我总是看到里面有一个???字符。当标题(szInfoTitle(不包含非ascii字符时，一切都很好。

这是一个完整的F#示例：

type NotifyIconData =
struct
val mutable cbSize: System.Int32  // DWORD
val mutable hWnd: System.IntPtr // HWND
val mutable uID: System.Int32 // UINT
val mutable uFlags: System.Int32  // UINT
val mutable uCallbackMessage: System.Int32  // UINT
val mutable hIcon: System.IntPtr  // HICON
[<MarshalAs(UnmanagedType.ByValTStr, SizeConst=128)>]
val mutable szTip: System.String  // char[128]
val mutable dwState: System.Int32  // DWORD
val mutable dwStateMask: System.Int32  // DWORD
[<MarshalAs(UnmanagedType.ByValTStr, SizeConst=256)>]
val mutable szInfo: System.String // char[256]
val mutable uTimeoutOrVersion: System.Int32  // UINT
[<MarshalAs(UnmanagedType.ByValTStr, SizeConst=64)>]
val mutable szInfoTitle: System.String // char[64]
val mutable dwInfoFlags: System.Int32  // DWORD
val mutable guidItem: Guid
val mutable hBalloonIcon: IntPtr //HIcon
end
[<DllImport("shell32.dll", SetLastError = true)>]
extern bool Shell_NotifyIcon(uint dwMessage, NotifyIconData& pnid)
[<DllImport("kernel32.dll")>]
extern IntPtr GetConsoleWindow();
let createNotify hwnd =
let mutable data = NotifyIconData()
data.cbSize <- Marshal.SizeOf(typedefof<NotifyIconData>)
data.hWnd <- hwnd
data.uID <- 0
data.uFlags <- 0x00000001 ||| 0x00000002 ||| 0x00000004 ||| 0x00000008 ||| 0x00000020 ||| 0x00000080
data.szTip <- "Tooltip"
data.dwState <- 0
data.dwStateMask <- 0x00000001 ||| 0x00000002
data.guidItem <- Guid.NewGuid ()
data.hIcon <- PInvoke.User32.LoadIcon(IntPtr.Zero, IntPtr(32512))
let result = Shell_NotifyIcon(uint NotifyCommand.Add, &(data))
data.uTimeoutOrVersion <- 4
let versionResult = Shell_NotifyIcon(uint NotifyCommand.SetVersion, &(data))
data
let createBalloon message (d: NotifyIconData) =
let mutable data = d

data.uFlags <-  0x00000010 ||| 0x00000020
data.dwInfoFlags <- 4
data.hBalloonIcon <- PInvoke.User32.LoadIcon(IntPtr.Zero, IntPtr(32512))
data.szInfo <- message
data.szInfoTitle <- "Balloon два dva dede ąęśćóŌ"
data.uTimeoutOrVersion <- 30000
let result = Shell_NotifyIcon(uint NotifyCommand.Modify, &(data))
result
let showBallon hwnd message =
GetConsoleWindow ()
|> createNotify 
|> createBalloon message

我尝试使用Shell.NotifyIconW，但它也不起作用。

Answer 1

除了Shell_NotifyIconW，您还需要检查您的NOTIFYICONDATA是否是支持Unicode的宽字节版本。检查您获得的cbSize：

• x86 ansi:cbSize=508
• x86 unicode:cbSize=956
• x86 ansi:cbSize=528
• x86 ansi:cbSize=976

在我的测试中，使用没有任何字符集设置的示例，即默认的cbSize = 528(ansi版本(，您需要将结构和函数的字符集显式指定为unicode:

[<StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)>]
type NotifyIconData =
struct
val mutable cbSize: System.Int32  // DWORD
val mutable hWnd: System.IntPtr // HWND
val mutable uID: System.Int32 // UINT
val mutable uFlags: System.Int32  // UINT
val mutable uCallbackMessage: System.Int32  // UINT
val mutable hIcon: System.IntPtr  // HICON
[<MarshalAs(UnmanagedType.ByValTStr, SizeConst=128)>]
val mutable szTip: System.String  // char[128]
val mutable dwState: System.Int32  // DWORD
val mutable dwStateMask: System.Int32  // DWORD
[<MarshalAs(UnmanagedType.ByValTStr, SizeConst=256)>]
val mutable szInfo: System.String // char[256]
val mutable uTimeoutOrVersion: System.Int32  // UINT
[<MarshalAs(UnmanagedType.ByValTStr, SizeConst=64)>]
val mutable szInfoTitle: System.String // char[64]
val mutable dwInfoFlags: System.Int32  // DWORD
val mutable guidItem: Guid
val mutable hBalloonIcon: IntPtr //HIcon
end
[<DllImport("shell32.dll", CharSet = CharSet.Unicode)>]
extern bool Shell_NotifyIcon(UInt32 dwMessage, NotifyIconData& pnid)

此外，Shell_NotifyIcon文档中没有指示可以使用错误代码。