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wxClientDC

Uploader:RedakteurMOD
Datum/Zeit:26.06.2013 21:06:58

#Include Once "wx-c/wx.bi"

Dim Shared As wxPanel  Ptr Panel
Dim Shared As wxApp    Ptr App
Dim Shared As wxColour Ptr c

Sub wxDCSetPenColor(dc As wxDC Ptr,r As wxChar, g As wxChar, b As wxChar, a As wxChar=&HFF)
  Dim As wxColour Ptr colour = wxColour_ctorByPartsWithAlpha(r,g,b,a)
  Dim As wxPen    Ptr pen    = wxDC_GetPen(dc)
  wxPen_SetColour(pen,colour)
  wxDC_SetPen(dc,pen)
  wxColour_dtor(colour)
End Sub


Sub EventListener WXCALL(event As wxEvent Ptr,iListener As wxInt)
  ' allocate a client DC
  Dim As wxDC Ptr dc = CPtr(_wxDC Ptr,wxClientDC_ctor2(Panel))
  ' use it
  wxDC_Clear(dc)
  For i As Integer = 1 To 3
    wxDCSetPenColor(dc,Rnd*255,Rnd*255,Rnd*255)
    wxDC_DrawCircle(dc, Rnd*640, Rnd*480, 1+Rnd*240)
  Next
  For i As Integer = 1 To 30
    wxDCSetPenColor(dc,Rnd*255,Rnd*255,Rnd*255)
    wxDC_DrawLine  (dc, Rnd*640, Rnd*480, Rnd*640, Rnd*480)
  Next
  For i As Integer = 1 To 10
    wxColour_Set(c,Rnd*255,Rnd*255,Rnd*255,Rnd*255)
    wxDC_SetTextForeground(dc,c)
    wxDC_DrawRotatedText(dc, wxString_ctorUTF8("Hello world!"), Rnd*640, Rnd*480, Rnd*360)
  Next
  ' release it
  wxDC_dtor(dc)
End Sub

Function OnInit WXCALL As wxBool
  Dim As wxFrame Ptr Frame=wxFrame_ctor()
  wxFrame_Create(Frame,WX_NULL,-1,wxString_ctorUTF8("test for wxClientDC()"), _
                 -1,-1, 640,480, _
                 wxFRAME_DEFAULT_STYLE Or wxCLOSE_BOX _
                 Xor wxMAXIMIZE_BOX Xor wxRESIZE_BORDER)

  Panel = wxPanel_ctor2(Frame)

  Dim As wxButton Ptr Button = wxButton_ctor()
  wxButton_Create(Button,Panel,,wxString_ctorUTF8("click me"), 70, 270, 250, 60)
  wxEvtHandler_proxy(Button, @EventListener)
  wxEvtHandler_Connect(Button, wxEvent_EVT_COMMAND_BUTTON_CLICKED())
  wxWindow_Show(Frame)
  c=wxColour_ctor()
  Return wxApp_OnInit(App)
End Function

Function OnExit WXCALL As wxInt
  Return wxApp_OnExit(App)
End Function

' main
App = wxAPP_ctor()
wxApp_RegisterVirtual(App,@OnInit,@OnExit)
wxApp_Run()