1 { Copyright (C) 2005 Bas Steendijk and Peter Green
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2 For conditions of distribution and use, see copyright notice in zlib_license.txt
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3 which is included in the package
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4 ----------------------------------------------------------------------------- }
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6 unit unitwindowobject;
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13 windows,messages,wmessages,
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17 {$define windows := lmessages}
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23 twindowobjectbase=class(tobject)
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25 onmsg:function(msg,wparam,lparam:taddrint):boolean of object;
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26 exitloopflag:boolean;
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27 exstyle,style:integer;
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28 docreatewindow:boolean;
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29 function windowprocaddr:pointer; virtual;
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30 procedure init_window(dwexstyle,dwstyle:cardinal);
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31 procedure init; virtual;
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32 procedure initinvisible;
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33 function settimer(id,timeout:taddrint):integer;
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34 function killtimer(id:taddrint):boolean;
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35 procedure postmessage(msg,wparam,lparam:taddrint);
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36 procedure messageloop;
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38 procedure processmessages; virtual;
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39 function processmessage:boolean;
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41 constructor create; virtual;
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42 destructor destroy; override;
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45 {this type exists for compatibility with the original one in bewarehttpd,
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46 therefore it inits on create}
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47 twindowobject=class(twindowobjectbase)
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48 constructor create; override;
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51 function WindowProc_windowobjectbase(ahWnd:HWND; auMsg:Integer; awParam:WPARAM; alParam:LPARAM):Integer; stdcall;
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54 twindowobject_Class : TWndClass = (style:0; lpfnWndProc:nil;
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55 cbClsExtra:0; cbWndExtra:sizeof(pointer); hInstance:thinstance(0); hIcon:hicon(0); hCursor:hcursor(0);
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56 hbrBackground:hbrush(0);lpszMenuName:nil; lpszClassName:'twindowobject_class');
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63 {------------------------------------------------------------------------------}
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65 function WindowProc_windowobjectbase(ahWnd:HWND; auMsg:Integer; awParam:WPARAM; alParam:LPARAM):Integer; stdcall;
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69 ////swriteln('in unitwindowobject.windowproc');
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70 Result := 0; // This means we handled the message
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71 if ahwnd <> hwnd(0) then i := getwindowlongptr(ahwnd,0) else i := 0;
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72 if i <> 0 then begin
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73 if assigned(twindowobjectbase(i).onmsg) then begin
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74 if not twindowobjectbase(i).onmsg(aumsg,awparam,alparam) then i := 0;
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77 if i = 0 then Result := DefWindowProc(ahWnd, auMsg, awParam, alParam)
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81 function twindowobjectbase.windowprocaddr;
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83 result := @WindowProc_windowobjectbase;
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86 procedure twindowobjectbase.initinvisible;
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88 init_window(WS_EX_TOOLWINDOW,WS_POPUP);
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91 procedure twindowobjectbase.init;
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96 function twindowobjectbase.settimer;
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98 result := windows.settimer(hwndmain,id,timeout,nil);
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101 function twindowobjectbase.killtimer;
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103 result := windows.killtimer(hwndmain,id);
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108 procedure twindowobjectbase.init_window;
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110 //swriteln('in twindowobject.create, about to call registerclass');
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111 twindowobject_Class.lpfnWndProc := windowprocaddr;
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112 Windows.RegisterClass(twindowobject_Class);
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113 //swriteln('about to call createwindowex');
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116 exstyle := dwexstyle;
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117 hWndMain := CreateWindowEx(dwexstyle, twindowobject_Class.lpszClassName,
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118 '', dwstyle, CW_USEDEFAULT, CW_USEDEFAULT,100, 100, hwnd(0), 0, HInstance, nil);
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119 //swriteln('about to check result of createwindowex');
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120 if hWndMain = hwnd(0) then raise exception.create('CreateWindowEx failed');
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121 //swriteln('about to store reference to self in extra windo memory');
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122 setwindowlongptr(hwndmain,0,taddrint(self));
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123 //swriteln('finished twindowobject.create , hwndmain='+inttohex(taddrint(hwndmain),16));
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127 constructor twindowobjectbase.create;
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133 destructor twindowobjectbase.destroy;
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135 if hWndMain <> hwnd(0) then DestroyWindow(hwndmain);
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139 procedure twindowobjectbase.postmessage;
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141 windows.postmessage(hwndmain,msg,wparam,lparam);
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144 function twindowobjectbase.ProcessMessage : Boolean;
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149 if PeekMessage(MsgRec, 0, 0, 0, PM_REMOVE) then begin
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151 TranslateMessage(MsgRec);
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152 DispatchMessage(MsgRec);
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156 procedure twindowobjectbase.processmessages;
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158 while processmessage do;
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161 procedure twindowobjectbase.messageloop;
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165 while GetMessage(MsgRec, hwnd(0), 0, 0) do begin
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166 TranslateMessage(MsgRec);
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167 DispatchMessage(MsgRec);
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168 if exitloopflag then exit;
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169 {if not peekmessage(msgrec,0,0,0,PM_NOREMOVE) then onidle}
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174 {------------------------------------------------------------------------------}
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176 constructor twindowobject.create;
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182 {------------------------------------------------------------------------------}
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