Von C nach D (elphi) - Äh wie ?

[turboPASCAL]

Hi,

isch habe da so ein kleines Problemschen. Ich habe mit mal das Winamp Plugin SDK
angeschaut. Soweit so gut, aber an diesen Stellen komm ich nicht weiter:

Code:

void config(struct winampVisModule *this_mod)
{
   MessageBox(this_mod->hwndParent,"This module is Copyright (c) 1997-1998, Justin Frankel/Nullsoft\n"
                           "-- This is just a demonstration module, it really isn't\n"
                           "   supposed to be enjoyable --","Configuration",MB_OK);
}

embedWindowState myWindowState;  // <--<<< //

winampVisModule *g_mod = NULL;

int width;
int height;

// initialization. Registers our window class, creates our window, etc. Again, this one works for
// both modules, but you could make init1() and init2()...
// returns 0 on success, 1 on failure.
int init(struct winampVisModule *this_mod)
{
  int styles;
  HWND parent = NULL;
  HWND (*e)(embedWindowState *v); // <--<<< //

   width = (this_mod == &mod3)?256:288; // width and height are the same for mod1 and mod2,
   height = (this_mod == &mod3)?32:256; // but mod3 is shaped differently
 // >>>--> //

  g_mod = this_mod;

   config_read(this_mod);

  // uncomment this line if your plugin draws to the screen using directx OVERLAY mode
  // myWindowState.flags |= EMBED_FLAGS_NOTRANSPARENCY; 
  
  myWindowState.r.left = config_x; // <--<<< //
  myWindowState.r.top = config_y;
  myWindowState.r.right = config_x + width;
  myWindowState.r.bottom = config_y + height;
     
  // <--<<< //
  *(void**)&e = (void *)SendMessage(this_mod->hwndParent,WM_WA_IPC,(LPARAM)0,IPC_GET_EMBEDIF);
 // >>>--> //

  if (!e)
  {
      MessageBox(this_mod->hwndParent,"This plugin requires Winamp 5.0+","blah",MB_OK);
      return 1;
  }

  parent = e(&myWindowState); // <--<<< // 

  SetWindowText(myWindowState.me, this_mod->description); // set our window title
   
   {   // Register our window class
      WNDCLASS wc;
      memset(&wc,0,sizeof(wc));
      wc.lpfnWndProc = WndProc;            // our window procedure
      wc.hInstance = this_mod->hDllInstance;   // hInstance of DLL
      wc.lpszClassName = szAppName;         // our window class name
   
      if (!RegisterClass(&wc)) 
      {
         MessageBox(this_mod->hwndParent,"Error registering window class","blah",MB_OK);
         return 1;
      }
   }

  styles = WS_VISIBLE|WS_CHILDWINDOW|WS_OVERLAPPED|WS_CLIPCHILDREN|WS_CLIPSIBLINGS;


   hMainWnd = CreateWindowEx(
      0,   // these exstyles put a nice small frame, 
                                 // but also a button in the taskbar
      szAppName,                     // our window class name
      NULL,            // no title, we're a child
      styles,                               // do not make the window visible 
      config_x,config_y,               // screen position (read from config)
      width,height,                  // width & height of window (need to adjust client area later)
      parent,            // parent window (winamp main window)
      NULL,                        // no menu
      this_mod->hDllInstance,            // hInstance of DLL
      0); // no window creation data

[Apollonius]

Ich übersetze die markierten Stellen einfach mal nach Delphi.

Code:

embedWindowState myWindowState;

var myWindowState: embedWindowState; //globale Variable

Code:

HWND (*e)(embedWindowState *v); //Funktionszeiger in C sind etwas schwierig

var e: function(v: pEmbedWindowState): hwnd;

Code:

g_mod = this_mod;

 g_mod:=this_mod

Code:

myWindowState.r.left = config_x; //Wo liegt das Problem?

Code:

*(void**)&e = (void *)SendMessage(this_mod->hwndParent,WM_WA_IPC,(LPARAM)0,IPC_GET_EMBEDIF); //köstlich!

PPointer(@@e)^:=Pointer(SendMessage(this_mod^.hwndParent, WM_WA_IPC, LPARAM(0), IPC_GET_EMBEDIF)) Das geht auch einfacher als
Pointer(e):=Pointer(SendMessage(this_mod^.hwndParent, WM_WA_IPC, LPARAM(0), IPC_GET_EMBEDIF))

Code:

parent = e(&myWindowState);

Parent:=e(@MyWindowState)

[turboPASCAL]

Vielen Dank.

Code:

*(void**)&e = (void *)SendMessage(...

Solche Stellen find ich immer toll.

Code:

myWindowState.r.left = config_x; //Wo liegt das Problem?

Ich habe k.Ahnung wo die Leutchen den Record her haben.

[Muetze1]

Zitat von turboPASCAL:

Code:

myWindowState.r.left = config_x; //Wo liegt das Problem?

Ich habe k.Ahnung wo die Leutchen den Record her haben.

Na myWindowState ist doch vom Typ embedWindowState, somit such nach dessen Deklaration...

[turboPASCAL]

Ich habe in die falsche Headerdatei geschaut.

Code:

typedef struct
{
  HWND me; //hwnd of the window

  int flags;

  RECT r;

  void *user_ptr; // for application use

  int extra_data[64]; // for internal winamp use
} embedWindowState;

... ist ein Fall von Selberschult.