rosapps/templates/dialog/memdlg.c

   1 /*
   2  *  ReactOS Standard Dialog Application Template
   3  *
   4  *  memdlg.c
   5  *
   6  *  Copyright (C) 2002  Robert Dickenson <robd@reactos.org>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #define WIN32_LEAN_AND_MEAN
  24 #include <windows.h>
  25 #include <tchar.h>
  26 #include "trace.h"
  27
  28
  29 extern HINSTANCE hInst;
  30
  31 #define ID_HELP   150
  32 #define ID_TEXT   200
  33
  34 ////////////////////////////////////////////////////////////////////////////////
  35
  36 LRESULT CALLBACK DialogWndProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
  37 {
  38     return 0;
  39 }
  40
  41 LPWORD lpwAlign(LPWORD lpIn)
  42 {
  43     ULONG ul;
  44
  45     ul = (ULONG)lpIn;
  46     ul += 3;
  47     ul >>= 2;
  48     ul <<= 2;
  49     return (LPWORD)ul;
  50 }
  51
  52 ////////////////////////////////////////////////////////////////////////////////
  53 // Create an in memory dialog resource and display.
  54 //  Note: this doesn't work
  55 //
  56 LRESULT CreateMemoryDialog(HINSTANCE hinst, HWND hwndOwner, LPSTR lpszMessage)
  57 {
  58     HGLOBAL hgbl;
  59     LPDLGTEMPLATE lpdt;
  60     LPDLGITEMTEMPLATE lpdit;
  61     LPWORD lpw;
  62     LPWSTR lpwsz;
  63     LRESULT ret;
  64     int nchar;
  65
  66     hgbl = GlobalAlloc(GMEM_ZEROINIT, 1024);
  67     if (!hgbl)
  68         return -1;
  69
  70     lpdt = (LPDLGTEMPLATE)GlobalLock(hgbl);
  71
  72     // Define a dialog box.
  73     lpdt->style = WS_POPUP | WS_BORDER | WS_SYSMENU | DS_MODALFRAME | WS_CAPTION;
  74     lpdt->cdit = 3;  // number of controls
  75     lpdt->x  = 10; lpdt->y  = 10;
  76     lpdt->cx = 100; lpdt->cy = 100;
  77     lpw = (LPWORD)(lpdt + 1);
  78     *lpw++ = 0;   // no menu
  79     *lpw++ = 0;   // predefined dialog box class (by default)
  80
  81     lpwsz = (LPWSTR)lpw;
  82     nchar = 1 + MultiByteToWideChar(CP_ACP, 0, "My Dialog", -1, lpwsz, 50);
  83     lpw += nchar;
  84
  85     //-----------------------
  86     // Define an OK button.
  87     //-----------------------
  88     lpw = lpwAlign(lpw); // align DLGITEMTEMPLATE on DWORD boundary
  89     lpdit = (LPDLGITEMTEMPLATE)lpw;
  90     lpdit->x  = 10; lpdit->y  = 70;
  91     lpdit->cx = 80; lpdit->cy = 20;
  92     lpdit->id = IDOK;  // OK button identifier
  93     lpdit->style = WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON;
  94
  95     lpw = (LPWORD)(lpdit + 1);
  96     *lpw++ = 0xFFFF;
  97     *lpw++ = 0x0080;    // button class
  98
  99     lpwsz = (LPWSTR)lpw;
 100     nchar = 1 + MultiByteToWideChar(CP_ACP, 0, "OK", -1, lpwsz, 50);
 101     lpw += nchar;
 102     lpw = lpwAlign(lpw); // align creation data on DWORD boundary
 103     *lpw++ = 0;           // no creation data
 104
 105     //-----------------------
 106     // Define a Help button.
 107     //-----------------------
 108     lpw = lpwAlign(lpw); // align DLGITEMTEMPLATE on DWORD boundary
 109     lpdit = (LPDLGITEMTEMPLATE)lpw;
 110     lpdit->x  = 55; lpdit->y  = 10;
 111     lpdit->cx = 40; lpdit->cy = 20;
 112     lpdit->id = ID_HELP;    // Help button identifier
 113     lpdit->style = WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON;
 114
 115     lpw = (LPWORD)(lpdit + 1);
 116     *lpw++ = 0xFFFF;
 117     *lpw++ = 0x0080;                 // button class atom
 118
 119     lpwsz = (LPWSTR)lpw;
 120     nchar = 1 + MultiByteToWideChar(CP_ACP, 0, "Help", -1, lpwsz, 50);
 121     lpw += nchar;
 122     lpw = lpwAlign(lpw); // align creation data on DWORD boundary
 123     *lpw++ = 0;           // no creation data
 124
 125     //-----------------------
 126     // Define a static text control.
 127     //-----------------------
 128     lpw = lpwAlign(lpw); // align DLGITEMTEMPLATE on DWORD boundary
 129     lpdit = (LPDLGITEMTEMPLATE)lpw;
 130     lpdit->x  = 10; lpdit->y  = 10;
 131     lpdit->cx = 40; lpdit->cy = 20;
 132     lpdit->id = ID_TEXT;  // text identifier
 133     lpdit->style = WS_CHILD | WS_VISIBLE | SS_LEFT;
 134
 135     lpw = (LPWORD)(lpdit + 1);
 136     *lpw++ = 0xFFFF;
 137     *lpw++ = 0x0082;                         // static class
 138
 139     for (lpwsz = (LPWSTR)lpw;
 140         *lpwsz++ = (WCHAR)*lpszMessage++;
 141     );
 142     lpw = (LPWORD)lpwsz;
 143     lpw = lpwAlign(lpw);  // align creation data on DWORD boundary
 144     *lpw++ = 0;           // no creation data
 145
 146     GlobalUnlock(hgbl);
 147     ret = DialogBoxIndirect(hinst, (LPDLGTEMPLATE)hgbl, hwndOwner, (DLGPROC)DialogWndProc);
 148     if (ret == 0) {
 149         TRACE(_T("DialogBoxIndirect() failed due to invalid handle to parent window: 0x%08X"), hwndOwner);
 150     } else if (ret == -1) {
 151         DWORD error = GetLastError();
 152         TRACE(_T("DialogBoxIndirect() failed, GetLastError returned 0x%08X"), error);
 153     }
 154     GlobalFree(hgbl);
 155     return ret;
 156 }
 157
 158 ////////////////////////////////////////////////////////////////////////////////