Problems using The ActiveX component in Delphi 6

[A Guest]

I tried to use the ActiveX plugin of VideoLan in Delphi 6.

Installation is very simple, you install VideoLan(i tried it with all available releases, that included the ActiveX PlugIn, should be 8.2 and higher) an then you import the ActiveX in Delphi. Then you create a component and instantiate it.

In version 8.2.x there was the problem of a invalid pointer, when you try to create an instance. It was solved, i read here.
In version 8.4.x Delphi says "inalvid variant operation", when i want to instantiate. This problem still occurs on the latest nightly builds.

I don´t know if anyone can give me a hint. Creating an Instance ist that simple, i dont know what i may do wrong and what i can do to get it working.

[dumarjo]

i'm in the smae situation even on delphi ou bcb

Jonathan

[ZerBit]

I also have problems with BCB 5. Take a look to this message thread.:

viewtopic.php?t=12461

Regards.

[ZerBit]

I have tested the ActiveX with VBasic without problems

I have tested the ActiveX with Delphi 2005 with the same related problems

Any advice?

[ZerBit]

Now i have tested with DeXter (BCB & Delphi 2006). I also have an error when i try to put the videolan ActiveX into one form. This is the error message:

Access violation at address 52082D9C in module vcl100.bpl. Read of address 00000000

And this is the error details:

+ $26[52082D9C]{vcl100.bpl } OleCtrls.OleCtrls.TOleControl.OnPosRectChange (Line 2638, "OleCtrls.pas" + 1) + $26
+ $0[51EC698B]{rtl100.bpl } System.System.@HandleAnyException (Line 9980, "system.pas" + 13) + $0
+ $36[77F69B73]{ntdll.dll } RtlConvertUlongToLargeInteger + $36
+ $9[77FA4DB8]{ntdll.dll } KiUserExceptionDispatcher + $9
+ $1131[64FC3281]{axvlc.dll } DllMain@12 + $1131
+ $EDB[64FC302B]{axvlc.dll } DllMain@12 + $EDB
+ $2D[520801B7]{vcl100.bpl } OleCtrls.OleCtrls.TOleControl.CreateWnd (Line 861, "OleCtrls.pas" + 5) + $2D
+ $10[51FFBD29]{vcl100.bpl } Controls.Controls.TWinControl.UpdateShowing (Line 6926, "Controls.pas" + 10) + $10
+ $2[51FFBDE4]{vcl100.bpl } Controls.Controls.TWinControl.UpdateControlState (Line 6952, "Controls.pas" + + $2
+ $5[52081B62]{vcl100.bpl } OleCtrls.OleCtrls.TOleControl.SetParent (Line 1972, "OleCtrls.pas" + 1) + $5
+ $19[53355CA3]{vcldesigner100.bpl} VCLSurface.VCLSurface.TControlItem.SetParent (Line 871, "vclsurface.pas" + 1) + $19
+ $1A[20EFD79A]{designide100.bpl} ComponentDesigner.ComponentDesigner.TComponentRoot.CreateCurrentComponent (Line 4331, "ComponentDesigner.pas" + 2) + $1A
+ $6[20F0DD2E]{designide100.bpl} Surface.Surface.TDesignSurface.AppTextDFM (Line 171, "Surface.pas" + 0) + $6
+ $3[20EE3D9A]{designide100.bpl} Designer.Designer.TDesigner.DoDragCreate (Line 764, "Designer.pas" + 1) + $3
+ $D[20EE451C]{designide100.bpl} Designer.Designer.TDesigner.DragEnd (Line 928, "Designer.pas" + 18) + $D
+ $2[20EE68BC]{designide100.bpl} Designer.Designer.TDesigner.MouseMove (Line 1674, "Designer.pas" + 1) + $2
+ $6[5335A618]{vcldesigner100.bpl} VCLSurface.VCLSurface.TVclDesignSurface.IsDesignMsg (Line 3028, "vclsurface.pas" + 34) + $6
+ $21[51FF8557]{vcl100.bpl } Controls.Controls.TControl.WndProc (Line 5035, "Controls.pas" + 4) + $21
+ $6[51FFC57B]{vcl100.bpl } Controls.Controls.TWinControl.WndProc (Line 7161, "Controls.pas" + 60) + $6
+ $5[52010D3B]{vcl100.bpl } Forms.Forms.TCustomForm.WndProc (Line 3277, "Forms.pas" + 125) + $5
+ $C[221F3DCB]{delphivclide100.bpl} VCLFormContainer.VCLFormContainer.TControlSizer.ControlWndProc (Line 303, "VCLFormContainer.pas" + 33) + $C
+ $6[51FFBEFC]{vcl100.bpl } Controls.Controls.TWinControl.MainWndProc (Line 6984, "Controls.pas" + 3) + $6
+ $8[51F00F00]{rtl100.bpl } Classes.Classes.TDataModule.WriteVerticalOffset (Line 11524, "classes.pas" + 0) + $8
[77D13A65]{USER32.dll }
[77D13B32]{USER32.dll }
+ $120[77D13D8C]{USER32.dll } GetMessageW + $120

I think that the most interesting information is these lines:
+ $36[77F69B73]{ntdll.dll } RtlConvertUlongToLargeInteger + $36
+ $9[77FA4DB8]{ntdll.dll } KiUserExceptionDispatcher + $9
+ $1131[64FC3281]{axvlc.dll } DllMain@12 + $1131
+ $EDB[64FC302B]{axvlc.dll } DllMain@12 + $EDB
+ $2D[520801B7]{vcl100.bpl } OleCtrls.OleCtrls.TOleControl.CreateWnd (Line 861, "OleCtrls.pas" + 5) + $2D

Any advice?

Regards