fl_win32.cxx

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    fl_i_own_selection[1] = 0;
    // Windoze seems unhappy unless I do these two steps. Documentation
    // seems to vary on whether opening the clipboard is necessary or
    // is in fact wrong:
    CloseClipboard();
    OpenClipboard(NULL);
    // fall through...
  case WM_RENDERFORMAT: {
    HANDLE h = GlobalAlloc(GHND, fl_selection_length[1]+1);
    if (h) {
      LPSTR p = (LPSTR)GlobalLock(h);
      memcpy(p, fl_selection_buffer[1], fl_selection_length[1]);
      p[fl_selection_length[1]] = 0;
      GlobalUnlock(h);
      SetClipboardData(CF_TEXT, h);
    }
    // Windoze also seems unhappy if I don't do this. Documentation very
    // unclear on what is correct:
    if (fl_msg.message == WM_RENDERALLFORMATS) CloseClipboard();
    return 1;}

  default:
    if (Fl::handle(0,0)) return 0;
    break;
  }

  return DefWindowProc(hWnd, uMsg, wParam, lParam);
}

////////////////////////////////////////////////////////////////
// This function gets the dimensions of the top/left borders and
// the title bar, if there is one, based on the FL_BORDER, FL_MODAL
// and FL_NONMODAL flags, and on the window's size range.
// It returns the following values:
//
// value | border | title bar
//   0   |  none  |   no
//   1   |  fix   |   yes
//   2   |  size  |   yes

int Fl_X::fake_X_wm(const Fl_Window* w,int &X,int &Y, int &bt,int &bx, int &by) {
  int W, H, xoff, yoff, dx, dy;
  int ret = bx = by = bt = 0;
  if (w->border() && !w->parent()) {
    if (w->size_range_set && (w->maxw != w->minw || w->maxh != w->minh)) {
      ret = 2;
      bx = GetSystemMetrics(SM_CXSIZEFRAME);
      by = GetSystemMetrics(SM_CYSIZEFRAME);
    } else {
      ret = 1;
      bx = GetSystemMetrics(SM_CXFIXEDFRAME);
      by = GetSystemMetrics(SM_CYFIXEDFRAME);
    }
    bt = GetSystemMetrics(SM_CYCAPTION);
  }
  //The coordinates of the whole window, including non-client area
  xoff = bx;
  yoff = by + bt;
  dx = 2*bx;
  dy = 2*by + bt;
  X = w->x()-xoff;
  Y = w->y()-yoff;
  W = w->w()+dx;
  H = w->h()+dy;

  //Proceed to positioning the window fully inside the screen, if possible
  //Make border's lower right corner visible
  if (Fl::w() < X+W) X = Fl::w() - W;
  if (Fl::h() < Y+H) Y = Fl::h() - H;
  //Make border's upper left corner visible
  if (X<0) X = 0;
  if (Y<0) Y = 0;
  //Make client area's lower right corner visible
  if (Fl::w() < X+dx+ w->w()) X = Fl::w() - w->w() - dx;
  if (Fl::h() < Y+dy+ w->h()) Y = Fl::h() - w->h() - dy;
  //Make client area's upper left corner visible
  if (X+xoff < 0) X = -xoff;
  if (Y+yoff < 0) Y = -yoff;
  //Return the client area's top left corner in (X,Y)
  X+=xoff;
  Y+=yoff;

  return ret;
}

////////////////////////////////////////////////////////////////

void Fl_Window::resize(int X,int Y,int W,int H) {
  UINT flags = SWP_NOSENDCHANGING | SWP_NOZORDER;
  int is_a_resize = (W != w() || H != h());
  int resize_from_program = (this != resize_bug_fix);
  if (!resize_from_program) resize_bug_fix = 0;
  if (X != x() || Y != y()) {
    set_flag(FL_FORCE_POSITION);
  } else {
    if (!is_a_resize) return;
    flags |= SWP_NOMOVE;
  }
  if (is_a_resize) {
    Fl_Group::resize(X,Y,W,H);
    if (shown()) {redraw(); i->wait_for_expose = 1;}
  } else {
    x(X); y(Y);
    flags |= SWP_NOSIZE;
  }
  if (!border()) flags |= SWP_NOACTIVATE;
  if (resize_from_program && shown()) {
    if (!resizable()) size_range(w(),h(),w(),h());
    int dummy, bt, bx, by;
    //Ignore window managing when resizing, so that windows (and more
    //specifically menus) can be moved offscreen.
    if (Fl_X::fake_X_wm(this, dummy, dummy, bt, bx, by)) {
      X -= bx;
      Y -= by+bt;
      W += 2*bx;
      H += 2*by+bt;
    }
    SetWindowPos(i->xid, 0, X, Y, W, H, flags);
  }
}

////////////////////////////////////////////////////////////////

void fl_fix_focus(); // in Fl.cxx

char fl_show_iconic;	// hack for Fl_Window::iconic()
// int fl_background_pixel = -1; // color to use for background
HCURSOR fl_default_cursor;
UINT fl_wake_msg = 0;
int fl_disable_transient_for; // secret method of removing TRANSIENT_FOR

Fl_X* Fl_X::make(Fl_Window* w) {
  Fl_Group::current(0); // get rid of very common user bug: forgot end()

  const char* class_name = /*w->xclass();
  if (!class_name) class_name =*/ "FLTK"; // create a "FLTK" WNDCLASS

  const char* message_name = "FLTK::ThreadWakeup";

  WNDCLASSEX wc;
  // Documentation states a device context consumes about 800 bytes
  // of memory... so who cares? If 800 bytes per window is what it
  // takes to speed things up, I'm game.
  //wc.style = CS_HREDRAW | CS_VREDRAW | CS_CLASSDC | CS_DBLCLKS;
  wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS;
  wc.lpfnWndProc = (WNDPROC)WndProc;
  wc.cbClsExtra = wc.cbWndExtra = 0;
  wc.hInstance = fl_display;
  if (!w->icon())
    w->icon((void *)LoadIcon(NULL, IDI_APPLICATION));
  wc.hIcon = wc.hIconSm = (HICON)w->icon();
  wc.hCursor = fl_default_cursor = LoadCursor(NULL, IDC_ARROW);
  //uchar r,g,b; Fl::get_color(FL_GRAY,r,g,b);
  //wc.hbrBackground = (HBRUSH)CreateSolidBrush(RGB(r,g,b));
  wc.hbrBackground = NULL;
  wc.lpszMenuName = NULL;
  wc.lpszClassName = class_name;
  wc.cbSize = sizeof(WNDCLASSEX);
  RegisterClassEx(&wc);
  if (!fl_wake_msg) fl_wake_msg = RegisterWindowMessage(message_name);

  HWND parent;
  DWORD style = WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
  DWORD styleEx = WS_EX_LEFT;

  int xp = w->x();
  int yp = w->y();
  int wp = w->w();
  int hp = w->h();

  int showit = 1;

  if (w->parent()) {
    style |= WS_CHILD;
    styleEx |= WS_EX_WINDOWEDGE | WS_EX_CONTROLPARENT;
    parent = fl_xid(w->window());
  } else {
    if (!w->size_range_set) {
      if (w->resizable()) {
	Fl_Widget *o = w->resizable();
	int minw = o->w(); if (minw > 100) minw = 100;
	int minh = o->h(); if (minh > 100) minh = 100;
	w->size_range(w->w() - o->w() + minw, w->h() - o->h() + minh, 0, 0);
      } else {
	w->size_range(w->w(), w->h(), w->w(), w->h());
      }
    }
    styleEx |= WS_EX_WINDOWEDGE | WS_EX_CONTROLPARENT;
    int xwm = xp , ywm = yp , bt, bx, by;
    switch (fake_X_wm(w, xwm, ywm, bt, bx, by)) {
      // No border (used for menus)
      case 0: style |= WS_POPUP;
              styleEx |= WS_EX_TOOLWINDOW;
	      break;

      // Thin border and title bar
      case 1: style |= WS_DLGFRAME | WS_CAPTION; break;

      // Thick, resizable border and title bar, with maximize button
      case 2: style |= WS_THICKFRAME | WS_MAXIMIZEBOX | WS_CAPTION ; break;
    }
    if (by+bt) {
      if (!w->modal()) style |= WS_SYSMENU | WS_MINIMIZEBOX;
      wp += 2*bx;
      hp += 2*by+bt;
    }
    if (!(w->flags() & Fl_Window::FL_FORCE_POSITION)) {
      xp = yp = CW_USEDEFAULT;
    } else {
      if (!Fl::grab()) {
	xp = xwm; yp = ywm;
        w->x(xp);w->y(yp);
      }
      xp -= bx;
      yp -= by+bt;
    }

    parent = 0;
    if (w->non_modal() && Fl_X::first && !fl_disable_transient_for) {
      // find some other window to be "transient for":
      Fl_Window* w = Fl_X::first->w;
      while (w->parent()) w = w->window();
      parent = fl_xid(w);
      if (!w->visible()) showit = 0;
    } else if (Fl::grab()) parent = fl_xid(Fl::grab());
  }

  Fl_X* x = new Fl_X;
  x->other_xid = 0;
  x->setwindow(w);
  x->region = 0;
  x->private_dc = 0;
  x->cursor = fl_default_cursor;
  x->xid = CreateWindowEx(
    styleEx,
    class_name, w->label(), style,
    xp, yp, wp, hp,
    parent,
    NULL, // menu
    fl_display,
    NULL // creation parameters
    );
  x->next = Fl_X::first;
  Fl_X::first = x;

  x->wait_for_expose = 1;
  if (fl_show_iconic) {showit = 0; fl_show_iconic = 0;}
  if (showit) {
    w->set_visible();
    w->handle(FL_SHOW); // get child windows to appear
    w->redraw(); // force draw to happen
  }
  // If we've captured the mouse, we dont want do activate any
  // other windows from the code, or we loose the capture.
  ShowWindow(x->xid, !showit ? SW_SHOWMINNOACTIVE :
	     (Fl::grab() || (style & WS_POPUP)) ? SW_SHOWNOACTIVATE : SW_SHOWNORMAL);

  // Drag-n-drop requires GCC 3.x or a non-GNU compiler...
#if !defined(__GNUC__) || __GNUC__ >= 3
  // Register all windows for potential drag'n'drop operations
  static char oleInitialized = 0;
  if (!oleInitialized) { OleInitialize(0L); oleInitialized=1; }

  RegisterDragDrop(x->xid, flIDropTarget);
#endif // !__GNUC__ || __GNUC__ >= 3

  if (w->modal()) {Fl::modal_ = w; fl_fix_focus();}
  return x;
}

////////////////////////////////////////////////////////////////

HINSTANCE fl_display = GetModuleHandle(NULL);

void Fl_Window::size_range_() {
  size_range_set = 1;
}

void Fl_X::set_minmax(LPMINMAXINFO minmax)
{
  int td, wd, hd, dummy;

  fake_X_wm(w, dummy, dummy, td, wd, hd);
  wd *= 2;
  hd *= 2;
  hd += td;

  minmax->ptMinTrackSize.x = w->minw + wd;
  minmax->ptMinTrackSize.y = w->minh + hd;
  if (w->maxw) {
    minmax->ptMaxTrackSize.x = w->maxw + wd;
    minmax->ptMaxSize.x = w->maxw + wd;
  }
  if (w->maxh) {
    minmax->ptMaxTrackSize.y = w->maxh + hd;
    minmax->ptMaxSize.y = w->maxh + hd;
  }
}

////////////////////////////////////////////////////////////////

#include <FL/filename.H> // need so FL_EXPORT fl_filename_name works

// returns pointer to the filename, or null if name ends with '/'
const char *fl_filename_name(const char *name) {
  const char *p,*q;
  if (!name) return (0);
  q = name;
  if (q[0] && q[1]==':') q += 2; // skip leading drive letter
  for (p = q; *p; p++) if (*p == '/' || *p == '\\') q = p+1;
  return q;
}

void Fl_Window::label(const char *name,const char *iname) {
  Fl_Widget::label(name);
  iconlabel_ = iname;
  if (shown() && !parent()) {
    if (!name) name = "";
    SetWindowText(i->xid, name);
    // if (!iname) iname = fl_filename_name(name);
    // should do something with iname here...
  }
}

////////////////////////////////////////////////////////////////
// Implement the virtual functions for the base Fl_Window class:

// If the box is a filled rectangle, we can make the redisplay *look*
// faster by using X's background pixel erasing.  We can make it
// actually *be* faster by drawing the frame only, this is done by
// setting fl_boxcheat, which is seen by code in fl_drawbox.cxx:
// For WIN32 it looks like all windows share a background color, so
// I use FL_GRAY for this and only do this cheat for windows that are
// that color.
// Actually it is totally disabled.
// Fl_Widget *fl_boxcheat;
//static inline int can_boxcheat(uchar b) {return (b==1 || (b&2) && b<=15);}

void Fl_Window::show() {
  image(Fl::scheme_bg_);
  if (Fl::scheme_bg_) {
    labeltype(FL_NORMAL_LABEL);
    align(FL_ALIGN_CENTER | FL_ALIGN_INSIDE | FL_ALIGN_CLIP);
  } else {
    labeltype(FL_NO_LABEL);
  }
  if (!shown()) {
    // if (can_boxcheat(box())) fl_background_pixel = fl_xpixel(color());
    Fl_X::make(this);
  } else {
    // Once again, we would lose the capture if we activated the window.
    if (IsIconic(i->xid)) OpenIcon(i->xid);
    if (!fl_capture) BringWindowToTop(i->xid);
    //ShowWindow(i->xid,fl_capture?SW_SHOWNOACTIVATE:SW_RESTORE);
  }
}

Fl_Window *Fl_Window::current_;
// the current context
HDC fl_gc = 0;
// the current window handle, initially set to -1 so we can correctly
// allocate fl_GetDC(0)
HWND fl_window = (HWND)-1;

// Here we ensure only one GetDC is ever in place.
HDC fl_GetDC(HWND w) {
  if (fl_gc) {
    if (w == fl_window) return fl_gc;
    ReleaseDC(fl_window, fl_gc);
  }
  fl_gc = GetDC(w);
  fl_window = w;
  // calling GetDC seems to always reset these: (?)
  SetTextAlign(fl_gc, TA_BASELINE|TA_LEFT);
  SetBkMode(fl_gc, TRANSPARENT);
  return fl_gc;
}

// make X drawing go into this window (called by subclass flush() impl.)
void Fl_Window::make_current() {
  fl_GetDC(fl_xid(this));

#if USE_COLORMAP
  // Windows maintains a hardware and software color palette; the
  // SelectPalette() call updates the current soft->hard mapping
  // for all drawing calls, so we must select it here before any
  // code does any drawing...

  fl_select_palette();
#endif // USE_COLORMAP

  current_ = this;
  fl_clip_region(0);
}

//
// End of "$Id: Fl_win32.cxx,v 1.3 2005/03/30 18:24:34 agno Exp $".
//