VB 显示PNG图片(适合透明窗体和一般窗体)
发布时间:2020-12-16 22:38:49 所属栏目:大数据 来源:网络整理
导读:Private Declare Function GdiplusStartup Lib "gdiplus" (token As Long,inputbuf As GdiplusStartupInput,Optional ByVal outputbuf As Long = 0) As GpStatusPrivate Declare Sub GdiplusShutdown Lib "gdiplus" (ByVal token As Long)Private Declare Fu
Private Declare Function GdiplusStartup Lib "gdiplus" (token As Long,inputbuf As GdiplusStartupInput,Optional ByVal outputbuf As Long = 0) As GpStatus Private Declare Sub GdiplusShutdown Lib "gdiplus" (ByVal token As Long) Private Declare Function GdipCreateFromHDC Lib "gdiplus" (ByVal hwnd As Long,graphics As Long) As GpStatus Private Declare Function GdipDeleteGraphics Lib "gdiplus" (ByVal graphics As Long) As GpStatus Private Declare Function GdipDrawImageRect Lib "gdiplus" (ByVal graphics As Long,ByVal image As Long,ByVal x As Single,ByVal y As Single,ByVal Width As Single,ByVal Height As Single) As GpStatus Private Declare Function GdipLoadImageFromFile Lib "gdiplus" (ByVal filename As String,image As Long) As GpStatus Private Declare Function GdipGetImageWidth Lib "gdiplus" (ByVal image As Long,Width As Long) As GpStatus Private Declare Function GdipGetImageHeight Lib "gdiplus" (ByVal image As Long,Height As Long) As GpStatus Private Declare Function GdipDisposeImage Lib "gdiplus" (ByVal image As Long) As GpStatus Private Type GdiplusStartupInput GdiplusVersion As Long DebugEventCallback As Long SuppressBackgroundThread As Long SuppressExternalCodecs As Long End Type Private Enum GpStatus Ok = 0 GenericError = 1 InvalidParameter = 2 OutOfMemory = 3 ObjectBusy = 4 InsufficientBuffer = 5 NotImplemented = 6 Win32Error = 7 WrongState = 8 Aborted = 9 FileNotFound = 10 ValueOverflow = 11 AccessDenied = 12 UnknownImageFormat = 13 FontFamilyNotFound = 14 FontStyleNotFound = 15 NotTrueTypeFont = 16 UnsupportedGdiplusVersion = 17 GdiplusNotInitialized = 18 PropertyNotFound = 19 PropertyNotSupported = 20 End Enum '主要代码就下面这几句而已. Private Const c_pngPath As String = "1.png" '要显示的图片名称和路径。 Dim m_token As Long Private Sub Form_paint() Dim pImg As Long Dim pGraphics As Long Dim w As Long,h As Long Call GdipCreateFromHDC(Me.hDC,pGraphics) Call GdipLoadImageFromFile(StrConv(c_pngPath,vbUnicode),pImg) Call GdipGetImageWidth(pImg,w) Call GdipGetImageHeight(pImg,h) Call GdipDrawImageRect(pGraphics,pImg,w,h) Call GdipDisposeImage(pImg) Call GdipDeleteGraphics(pGraphics) End Sub Private Sub Form_Load() Dim StartupInput As GdiplusStartupInput StartupInput.GdiplusVersion = 1 If GdiplusStartup(m_token,StartupInput,ByVal 0) Then MsgBox "Error initializing GDI+" Exit Sub End If End Sub Private Sub Form_Unload(Cancel As Integer) Call GdiplusShutdown(m_token) End Sub (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |