帮我写一个vb6 桌面歌词显示窗体模块
时间: 2023-06-15 14:08:29 浏览: 243
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以下是一个简单的VB6桌面歌词显示窗体模块的示例代码:
```
'模块名称: frmDesktopLyrics
'功能:用于在桌面上显示歌词
Option Explicit
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function SetLayeredWindowAttributes Lib "user32" (ByVal hwnd As Long, ByVal crKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Long
Private Declare Function GetDesktopWindow Lib "user32" () As Long
Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function ReleaseDC Lib "user32" (ByVal hwnd As Long, ByVal hdc As Long) As Long
Private Declare Function UpdateWindow Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function GetClientRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Private Declare Function MoveWindow Lib "user32" (ByVal hwnd As Long, ByVal X As Long, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal bRepaint As Long) As Long
Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Private Declare Function SetWindowRgn Lib "user32" (ByVal hwnd As Long, ByVal hRgn As Long, ByVal bRedraw As Boolean) As Long
Private Declare Function CreateRectRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Private Declare Function TextOut Lib "gdi32" Alias "TextOutA" (ByVal hdc As Long, ByVal X As Long, ByVal Y As Long, ByVal lpString As String, ByVal nCount As Long) As Long
Private Declare Function SetTextColor Lib "gdi32" (ByVal hdc As Long, ByVal crColor As Long) As Long
Private Declare Function SetBkMode Lib "gdi32" (ByVal hdc As Long, ByVal nBkMode As Long) As Long
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private m_lyrics As String '歌词文本
Private m_lyricsFont As String '歌词字体
Private m_lyricsFontSize As Integer '歌词字体大小
Private m_lyricsColor As Long '歌词颜色
Private m_lyricsPosition As Integer '歌词位置
Private m_lyricsWindow As Long '歌词窗口句柄
Public Enum LyricsPosition
Top = 0
Middle = 1
Bottom = 2
End Enum
Public Property Let Lyrics(Text As String)
m_lyrics = Text
If m_lyricsWindow <> 0 Then
UpdateLyrics
End If
End Property
Public Property Let LyricsFont(FontName As String)
m_lyricsFont = FontName
If m_lyricsWindow <> 0 Then
UpdateLyrics
End If
End Property
Public Property Let LyricsFontSize(FontSize As Integer)
m_lyricsFontSize = FontSize
If m_lyricsWindow <> 0 Then
UpdateLyrics
End If
End Property
Public Property Let LyricsColor(Color As Long)
m_lyricsColor = Color
If m_lyricsWindow <> 0 Then
UpdateLyrics
End If
End Property
Public Property Let LyricsPosition(Position As LyricsPosition)
m_lyricsPosition = Position
If m_lyricsWindow <> 0 Then
UpdateLyrics
End If
End Property
Public Sub ShowLyrics()
Dim desktopHDC As Long
Dim lyricsHDC As Long
Dim desktopRect As RECT
Dim lyricsRect As RECT
Dim desktopWidth As Long
Dim desktopHeight As Long
Dim lyricsWidth As Long
Dim lyricsHeight As Long
Dim lyricsX As Long
Dim lyricsY As Long
Dim lyricsRegion As Long
Dim lyricsStyle As Long
Dim lyricsFlags As Long
'获取桌面的设备上下文句柄
desktopHDC = GetDC(GetDesktopWindow)
'获取桌面的尺寸
GetClientRect GetDesktopWindow, desktopRect
desktopWidth = desktopRect.Right - desktopRect.Left
desktopHeight = desktopRect.Bottom - desktopRect.Top
'创建歌词窗口
m_lyricsWindow = CreateWindow("", "", WS_POPUP Or WS_VISIBLE, 0, 0, 0, 0, 0, 0, App.hInstance, ByVal 0&)
lyricsHDC = GetDC(m_lyricsWindow)
'设置歌词字体、大小、颜色、位置
SetTextColor lyricsHDC, m_lyricsColor
SetBkMode lyricsHDC, TRANSPARENT
SelectObject lyricsHDC, CreateFont(m_lyricsFontSize, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, m_lyricsFont)
Select Case m_lyricsPosition
Case LyricsPosition.Top
lyricsY = desktopHeight / 4
Case LyricsPosition.Middle
lyricsY = desktopHeight / 2
Case LyricsPosition.Bottom
lyricsY = desktopHeight * 3 / 4
End Select
'获取歌词文本的尺寸
GetClientRect m_lyricsWindow, lyricsRect
TextOut lyricsHDC, 0, 0, m_lyrics, Len(m_lyrics)
lyricsWidth = lyricsRect.Right - lyricsRect.Left
lyricsHeight = lyricsRect.Bottom - lyricsRect.Top
'计算歌词窗口的位置
lyricsX = desktopWidth / 2 - lyricsWidth / 2
'设置歌词窗口的位置和尺寸
MoveWindow m_lyricsWindow, lyricsX, lyricsY, lyricsWidth, lyricsHeight, True
'创建歌词窗口的区域
lyricsRegion = CreateRectRgn(0, 0, lyricsWidth, lyricsHeight)
SetWindowRgn m_lyricsWindow, lyricsRegion, True
'将歌词窗口置于桌面顶层
SetWindowPos m_lyricsWindow, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE Or SWP_NOACTIVATE
'将歌词窗口设置为半透明
lyricsStyle = GetWindowLong(m_lyricsWindow, GWL_EXSTYLE)
SetWindowLong m_lyricsWindow, GWL_EXSTYLE, lyricsStyle Or WS_EX_LAYERED
SetLayeredWindowAttributes m_lyricsWindow, 0, 128, LWA_ALPHA
'更新歌词窗口
UpdateLyrics
'释放设备上下文句柄
ReleaseDC GetDesktopWindow, desktopHDC
ReleaseDC m_lyricsWindow, lyricsHDC
End Sub
Public Sub HideLyrics()
'销毁歌词窗口
If m_lyricsWindow <> 0 Then
DestroyWindow m_lyricsWindow
m_lyricsWindow = 0
End If
End Sub
Private Sub UpdateLyrics()
Dim lyricsHDC As Long
Dim lyricsRect As RECT
'获取歌词窗口的设备上下文句柄
lyricsHDC = GetDC(m_lyricsWindow)
'设置歌词文本的位置和颜色
SelectObject lyricsHDC, CreateFont(m_lyricsFontSize, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, m_lyricsFont)
SetTextColor lyricsHDC, m_lyricsColor
'获取歌词文本的尺寸
GetClientRect m_lyricsWindow, lyricsRect
'在歌词窗口上绘制歌词文本
TextOut lyricsHDC, 0, 0, m_lyrics, Len(m_lyrics)
'更新歌词窗口
UpdateWindow m_lyricsWindow
'释放设备上下文句柄
ReleaseDC m_lyricsWindow, lyricsHDC
End Sub
```
使用示例:
```
Private Sub Form_Load()
'创建桌面歌词显示窗口
Dim desktopLyrics As frmDesktopLyrics
Set desktopLyrics = New frmDesktopLyrics
desktopLyrics.Lyrics = "Hello, world!"
desktopLyrics.LyricsFont = "Arial"
desktopLyrics.LyricsFontSize = 24
desktopLyrics.LyricsColor = vbRed
desktopLyrics.LyricsPosition = LyricsPosition.Middle
desktopLyrics.ShowLyrics
End Sub
```
注意事项:
- 此示例代码仅供参考和学习,可能存在不足和错误,请谨慎使用。
- 由于桌面歌词显示窗口是在桌面上绘制的,因此在使用时应避免与其他桌面应用程序冲突。
- 在使用时应注意歌词窗口的位置和尺寸,以免遮挡其他桌面元素和应用程序窗口。
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