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lightning-sunbird  0.9+nobinonly
loadstatus.cpp
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00005  * The contents of this file are subject to the Mozilla Public License Version
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00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
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00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
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00037 
00038 #include <windows.h>
00039 #include <windowsx.h>
00040 
00041 extern HINSTANCE hInst;
00042 static char szClassName[] = "LoadStatusWindowClass";
00043 HBRUSH hBrushBackground = NULL;
00044 
00045 HWND ShowLoadStatus(char * aMessage)
00046 {
00047   if (!aMessage)
00048     return NULL;
00049 
00050   LOGBRUSH lb;
00051   lb.lbStyle = BS_SOLID;
00052   lb.lbColor = RGB(255,255,0);
00053   lb.lbHatch = NULL;
00054   hBrushBackground = CreateBrushIndirect(&lb);
00055 
00056   WNDCLASS wc;
00057   wc.style         = 0; 
00058   wc.lpfnWndProc   = DefWindowProc; 
00059   wc.cbClsExtra    = 0; 
00060   wc.cbWndExtra    = 0; 
00061   wc.hInstance     = hInst; 
00062   wc.hIcon         = NULL; 
00063   wc.hCursor       = NULL; 
00064   wc.hbrBackground = hBrushBackground ? hBrushBackground : (HBRUSH)(COLOR_BTNFACE + 1);
00065   wc.lpszMenuName  = NULL; 
00066   wc.lpszClassName = szClassName;
00067 
00068   if(!RegisterClass(&wc)) {
00069     DeleteBrush(hBrushBackground);
00070     return NULL;
00071   }
00072   
00073   HWND hWnd = CreateWindowEx(WS_EX_TOOLWINDOW, szClassName, "", 
00074                              WS_POPUP | WS_VISIBLE | WS_DISABLED,
00075                              0,0,0,0, NULL, NULL, hInst, NULL);
00076   if (!hWnd) {
00077     UnregisterClass(szClassName, hInst);
00078     DeleteBrush(hBrushBackground);
00079     return NULL;
00080   }
00081 
00082   HDC hDC = GetDC(hWnd);
00083   if (!hDC) {
00084     DestroyWindow(hWnd);
00085     UnregisterClass(szClassName, hInst);
00086     DeleteBrush(hBrushBackground);
00087     return NULL;
00088   }
00089 
00090   HFONT hFont = GetStockFont(DEFAULT_GUI_FONT);
00091   HFONT hFontOld = SelectFont(hDC, hFont);
00092   SIZE size;
00093   GetTextExtentPoint32(hDC, aMessage, strlen(aMessage), &size);
00094   SetWindowPos(hWnd, HWND_TOPMOST, 0, 0, size.cx + 4, size.cy + 2, SWP_SHOWWINDOW);
00095   SetBkMode(hDC, TRANSPARENT);
00096   TextOut(hDC, 2, 1, aMessage, strlen(aMessage));
00097   ReleaseDC(hWnd, hDC);
00098 
00099   return hWnd;
00100 }
00101 
00102 void DestroyLoadStatus(HWND ahWnd)
00103 {
00104   if (ahWnd)
00105     DestroyWindow(ahWnd);
00106 
00107   UnregisterClass(szClassName, hInst);
00108   DeleteBrush(hBrushBackground);
00109 }