Я пишу приложение, которое как часть рисует изображение на ЖК-дисплее клавиатуры Logitech G15v2. По большей части функция работает нормально, но через некоторое время после запуска одна из строк выдает «Generic Error in GDI+
»
Проблема, согласно трассировке стека, заключается в Bitmap.GetHbitmap()
:
at System.Drawing.Bitmap.GetHbitmap(Color background)
at System.Drawing.Bitmap.GetHbitmap()
at CSCI171_TermProject.G15.Tick(Single Interval) in C:\Users\Sukasa\CSCI171\Term Project\CSCI171-TermProject\G15.vb:line 45"
Я читал несколько потоков, упоминающих эту ошибку, но это было в контексте сохранения файла, а не связанного с ним HBitmap. Может ли кто-нибудь с большим опытом работы с GDI +, чем я, предложить какие-либо идеи о причинах этой проблемы?
Для большей справки, вот полный код модуля:
Public Module G15
Private G15 As New G15Lib.G15Interface
Private G15BaseImage As New Bitmap("GFX\G15-BGImg.png")
Private G15Minimap As New Bitmap(43, 43, Imaging.PixelFormat.Format32bppArgb)
Private G15HeartMonitor As New Bitmap(44, 17, Imaging.PixelFormat.Format32bppArgb)
Private G15Heartbeat As New Bitmap("GFX\G15-HB.png")
Private G As Graphics = Graphics.FromImage(G15BaseImage)
Private G15On As Boolean = False
Public Sub Init()
If Not G15.G15Detected Then
Log.Write("Get extra content by connecting a G15")
Return
End If
G15On = True
G15.LCD.initLCD(AppName)
G15.LEDs.setKeyboardLight(2)
G15.LCD.showBitmap(G15BaseImage.GetHbitmap, 1)
Log.Write("Logitech G15 Features Enabled")
End Sub
Public Sub Tick(ByVal Interval As Single)
Const StepTime As Single = 0.09
If Not G15On Then Return
Static HeartTime As Single = StepTime
HeartTime -= Interval
If HeartTime <= 0 Then
HeartTime = StepTime
AnimateHeartbeat()
End If
MakeMinimap()
G.DrawImage(G15Minimap, New Rectangle(0, 0, 43, 43), New Rectangle(0, 0, 43, 43), GraphicsUnit.Pixel)
G.DrawImage(G15HeartMonitor, New Rectangle(116, 0, 44, 17), New Rectangle(0, 0, 44, 17), GraphicsUnit.Pixel)
Try
G15.LCD.showBitmap(G15BaseImage.GetHbitmap, 1)
Catch ex As Exception
G15On = False
G15.LCD.closeLCD()
Log.Write("GDI+ Error in G15 renderer")
Log.Write("G15 features disabled")
End Try
End Sub
Public Sub AnimateHeartbeat()
Static G As Graphics = Graphics.FromImage(G15HeartMonitor)
Static BMTemp As New Bitmap(44, 17, Imaging.PixelFormat.Format32bppArgb)
Static GTemp As Graphics = Graphics.FromImage(BMTemp)
Dim Columns As Integer = 13 + ((PlayerActor.HPMax - PlayerActor.iHP) / PlayerActor.HPMax) * 20
Static ColumnIndex As Integer = 0
GTemp.DrawImage(G15HeartMonitor, New Rectangle(0, 0, 44, 17), New Rectangle(1, 0, 44, 17), GraphicsUnit.Pixel)
G.DrawImage(BMTemp, New Rectangle(0, 0, 44, 17), New Rectangle(0, 0, 44, 17), GraphicsUnit.Pixel)
G.DrawLine(Pens.Black, 43, 0, 43, 17)
If ColumnIndex >= Columns Then
ColumnIndex = 0
End If
G.DrawImage(G15Heartbeat, New Rectangle(43, 4, 1, 8), New Rectangle(If(PlayerActor.iHP > 0, Math.Min(ColumnIndex, 7), 7), 0, 1, 8), GraphicsUnit.Pixel)
ColumnIndex += 1
End Sub
Public Sub MakeMinimap()
Static oPos As New XYPos(0, 0)
Dim iActorIndice As Int32 = 0
For Y = -21 To 21
For X = -21 To 21
G15Minimap.SetPixel(X + 21, Y + 21, Color.Black)
oPos.X = X + PlayerActor.PositionX
oPos.Y = Y + PlayerActor.PositionY
If oPos.Y < 0 OrElse oPos.X < 0 OrElse oPos.X >= iMapSize OrElse oPos.Y >= iMapSize Then
G15Minimap.SetPixel(X + 21, Y + 21, Color.Black)
Continue For
End If
If Main.Map.arrAccessiblityMap(oPos.AsOffset) Then
G15Minimap.SetPixel(X + 21, Y + 21, Color.White)
Else
G15Minimap.SetPixel(X + 21, Y + 21, Color.Black)
End If
For iActorIndice = iActorIndice To genActors.Count - 1
Dim oActor As Actor = genActors(iActorIndice)
If oPos.Y > oActor.PositionY Then
Continue For
ElseIf oPos.Y < oActor.PositionY Then
Exit For
ElseIf oPos.Y = oActor.PositionY AndAlso oPos.X < oActor.PositionX Then
Exit For
End If
If oPos.X = oActor.PositionX AndAlso oPos.Y = oActor.PositionY Then
G15Minimap.SetPixel(X + 21, Y + 21, Color.Black)
End If
Next
Next
Next
End Sub
End Module