From d37269a23b1bec33be41fdd4cd466943c78f00e3 Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Thu, 31 Dec 2015 10:39:51 +0000
Subject: The changes introduced at r.10921 destroyed program-controlled window
 resizing. This change hopefully repairs that.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10987 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_win32.cxx | 53 ++++++++++++++++++++++++-----------------------------
 1 file changed, 24 insertions(+), 29 deletions(-)

(limited to 'src')

diff --git a/src/Fl_win32.cxx b/src/Fl_win32.cxx
index d1927e7a3..2ae1e6145 100644
--- a/src/Fl_win32.cxx
+++ b/src/Fl_win32.cxx
@@ -104,10 +104,6 @@ typedef int (WINAPI* fl_wsk_select_f)(int, fd_set*, fd_set*, fd_set*, const stru
 typedef int (WINAPI* fl_wsk_fd_is_set_f)(SOCKET, fd_set *);
 
 static HMODULE s_wsock_mod = 0;
-static HMODULE dwmapi_dll = LoadLibrary("dwmapi.dll");
-typedef HRESULT (WINAPI* DwmGetWindowAttribute_type)(HWND hwnd, DWORD dwAttribute, PVOID pvAttribute, DWORD cbAttribute);
-static DwmGetWindowAttribute_type DwmGetWindowAttribute = 0;
-static const DWORD DWMA_EXTENDED_FRAME_BOUNDS = 9;
 static fl_wsk_select_f s_wsock_select = 0;
 static fl_wsk_fd_is_set_f fl_wsk_fd_is_set = 0;
 
@@ -1622,19 +1618,7 @@ static int fake_X_wm_style(const Fl_Window* w,int &X,int &Y, int &bt,int &bx, in
 }
 
 int Fl_X::fake_X_wm(const Fl_Window* w,int &X,int &Y, int &bt,int &bx, int &by) {
-  int val = fake_X_wm_style(w, X, Y, bt, bx, by, 0, 0, w->maxw, w->minw, w->maxh, w->minh, w->size_range_set);
-  if (dwmapi_dll) {
-    RECT r;
-    if (!DwmGetWindowAttribute) DwmGetWindowAttribute = (DwmGetWindowAttribute_type)GetProcAddress(dwmapi_dll, "DwmGetWindowAttribute");
-    if (DwmGetWindowAttribute) {
-      if ( DwmGetWindowAttribute(fl_xid(w), DWMA_EXTENDED_FRAME_BOUNDS, &r, sizeof(RECT)) == S_OK ) {
-        bx = (r.right - r.left - w->w())/2;
-        by = bx;
-        bt = r.bottom - r.top - w->h() - 2*by;
-      }
-    }
-  }
-  return val;
+  return fake_X_wm_style(w, X, Y, bt, bx, by, 0, 0, w->maxw, w->minw, w->maxh, w->minh, w->size_range_set);
 }
 
 ////////////////////////////////////////////////////////////////
@@ -2739,10 +2723,29 @@ void Fl_Paged_Device::print_window(Fl_Window *win, int x_offset, int y_offset)
 
 void Fl_Paged_Device::draw_decorated_window(Fl_Window *win, int x_offset, int y_offset, Fl_Surface_Device *toset)
 {
-  int X, Y, bt, bx, by, ww, wh; // compute the window border sizes
-  Fl_X::fake_X_wm(win, X, Y, bt, bx, by);
-  ww = win->w() + 2 * bx;
-  wh = win->h() + bt + 2 * by;
+  static HMODULE dwmapi_dll = LoadLibrary("dwmapi.dll");
+  typedef HRESULT (WINAPI* DwmGetWindowAttribute_type)(HWND hwnd, DWORD dwAttribute, PVOID pvAttribute, DWORD cbAttribute);
+  static DwmGetWindowAttribute_type DwmGetWindowAttribute = 0;
+  static const DWORD DWMWA_EXTENDED_FRAME_BOUNDS = 9;
+  int bt, bx, by; // compute the window border sizes
+  RECT r;
+  int need_r = 1;
+  if (dwmapi_dll) {
+    if (!DwmGetWindowAttribute) DwmGetWindowAttribute = (DwmGetWindowAttribute_type)GetProcAddress(dwmapi_dll, "DwmGetWindowAttribute");
+    if (DwmGetWindowAttribute) {
+      if ( DwmGetWindowAttribute(fl_xid(win), DWMWA_EXTENDED_FRAME_BOUNDS, &r, sizeof(RECT)) == S_OK ) {
+        need_r = 0;
+      }
+    }
+  }
+  if (need_r) {
+    GetWindowRect(fl_xid(win), &r);
+  }
+  bx = (r.right - r.left - win->w())/2;
+  by = bx;
+  bt = r.bottom - r.top - win->h() - 2*by;
+  int ww = win->w() + 2 * bx;
+  int wh = win->h() + bt + 2 * by;
   Fl_Display_Device::display_device()->set_current(); // make window current
   win->show();
   Fl::check();
@@ -2750,14 +2753,6 @@ void Fl_Paged_Device::draw_decorated_window(Fl_Window *win, int x_offset, int y_
   HDC save_gc = fl_gc;
   fl_gc = GetDC(NULL); // get the screen device context
   // capture the 4 window sides from screen
-  RECT r;
-  HRESULT res = S_OK + 1;
-  if (DwmGetWindowAttribute) {
-    res = DwmGetWindowAttribute(fl_window, DWMA_EXTENDED_FRAME_BOUNDS, &r, sizeof(RECT));
-  }
-  if (res != S_OK) {
-    GetWindowRect(fl_window, &r);
-  }
   Window save_win = fl_window;
   fl_window = NULL; // force use of read_win_rectangle() by fl_read_image()
   uchar *top_image = fl_read_image(NULL, r.left, r.top, ww, bt + by);
-- 
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