53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
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* invisible_window.h: Create invisible Window
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*
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* Copyright (C) 2017 Frank Morgner <frankmorgner@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <windows.h>
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HWND create_invisible_window(LPCTSTR lpszClassName,
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LRESULT (CALLBACK* WndProc)(HWND, UINT, WPARAM, LPARAM),
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HINSTANCE hInstance)
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{
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HWND hWnd = NULL;
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WNDCLASSEX wx = {0};
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//Register Window class
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wx.cbSize = sizeof(WNDCLASSEX);
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wx.lpfnWndProc = WndProc;
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wx.hInstance = hInstance;
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wx.lpszClassName = lpszClassName;
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if (RegisterClassEx(&wx)) {
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/* create window */
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hWnd = CreateWindowEx(0, lpszClassName, lpszClassName, 0, 0, 0, 0, 0,
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HWND_MESSAGE, NULL, NULL, NULL );
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}
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return hWnd;
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}
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static BOOL delete_invisible_window(HWND hWnd, LPCTSTR lpszClassName,
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HINSTANCE hInstance)
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{
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BOOL r;
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r = DestroyWindow(hWnd);
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r &= UnregisterClass(lpszClassName, hInstance);
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return r;
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}
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