Embed a Win32 program in the WPF program.

 

See the principle, http://msdn.microsoft.com/zh-cn/library/ms752055 (vs.90). aspx summary override buildwindowcore, return a Win32 window pointer, And the Win32 window parent window is set to buildwindowcore passed in the window handle. Note that the ws_style attribute is added to the Win32 window style. Public class embeddedapp: hwndhost <br/>{< br/> [dllimport ("user32.dll")] <br/> Private Static extern int setparent (intptr hwndchild, intptr hwndparent ); <br/> [dllimport ("user32.dll", setlasterror = true, charset = charset. auto)] <br/> Private Static extern uint setwindowlong (intptr hwnd, int nindex, uint newlong); <br/> [dllimport ("user32.dll", setlasterror = true, charset = charset. auto)] <br/> Private Static extern uint getwindowlong (intptr hwnd, int nindex); </P> <p> [dllimport ("user32.dll")] <br/> Private Static extern int enumwindows (callbackptr callptr, ref javaswinfo wndinforef); <br/> [dllimport ("user32.dll")] <br/> static extern int getwindowtext (intptr handle, stringbuilder text, int maxlen); <br/> [dllimport ("user32.dll")] <br/> Public static extern int getwindowrect (intptr hwn D, ref rect RC); <br/> internal const int <br/> gwl_wndproc = (-4), <br/> gwl_hinstance = (-6 ), <br/> gwl_hwndparent = (-8), <br/> gwl_style = (-16), <br/> gwl_exstyle = (-20 ), <br/> gwl_userdata = (-21), <br/> gwl_id = (-12); <br/> internal const uint <br/> ws_child = 0x40000000, <br/> ws_visible = 0x10000000, <br/> lbs_policy = 0x00000001, <br/> host_id = 0x00000002, <br/> listbox_id = 0x0000000 1, <br/> ws_vscroll = 0x00200000, <br/> ws_border = 0x00800000, <br/> ws_popup = 0x80000000; <br/> private const int hwnd_top = 0x0; <br/> private const int wm_command = 0x0112; <br/> private const int wm_qt_paint = 0xc2dc; <br/> private const int wm_paint = 0x000f; <br/> private const int wm_size = 0x0005; <br/> private const int swp_framechanged = 0x0020; <br/> private border wndhoster; <br/> PR Ivate double screenw, screenh; <br/> private system. diagnostics. process appproc; <br/> private uint oldstyle; <br/> private intptr hwndhost; <br/> private string apppath; <br/> Public embeddedapp (border B, double SW, double SH, string P, string f) <br/>{< br/> wndhoster = B; <br/> screenh = sh; <br/> screenw = Sw; <br/> apppath = P; <br/> wininfo = new windowinfo (); <br/> wininfo. wintitle = f; <br />}< Br/> protected override handleref buildwindowcore (handleref hwndparent) <br/>{< br/> hwndhost = findthewindow (); <br/> If (hwndhost = NULL) <br/>{< br/> appproc = new system. diagnostics. process (); <br/> appproc. startinfo. filename = apppath; <br/> appproc. start (); <br/> thread. sleep (1000); <br/> hwndhost = findthewindow (); <br/>}< br/> // The window Embedded in hwnhost must be set to ws_child <br/> oldstyle = Getwindowlong (hwndhost, gwl_style); <br/> uint newstyle = oldstyle; <br/> // ws_child and ws_popup cannot coexist. Some Win32 windows, such as QQ windows, have the ws_popup attribute, which may cause program errors during embedding. <br/> newstyle | = ws_child; <br/> newstyle & = ~ Ws_popup; <br/> setwindowlong (hwndhost, gwl_style, newstyle); <br/> // center the window. In fact, the container of the window is centered. <br/> reposwindow (wndhoster, screenw, screenh); <br/> // set the parent window of netterm to hwndhost. <br/> setparent (hwndhost, hwndparent. handle); <br/> return New handleref (this, hwndhost); <br/>}< br/> protected override void destroywindowcore (system. runtime. interopservices. handleref hwnd) <br/>{< br/> setwindowlong (hwndhost, G Wl_style, oldstyle); <br/> setparent (hwndhost, (intptr) 0); <br/>}</P> <p> [structlayout (layoutkind. sequential)] <br/> public struct rect <br/>{< br/> Public int left; <br/> Public int top; <br/> Public int right; <br/> Public int bottom; <br/>}< br/> [structlayout (layoutkind. sequential)] <br/> public struct javaswinfo <br/> {<br/> Public String wintitle; <br/> Public rect R; <br/> Public intptr Hwnd; <br/>}< br/> Public Delegate bool callbackptr (intptr hwnd, ref javaswinfo wndinforef); <br/> Private Static callbackptr; <br/> private windowinfo wininfo; <br/> Public static bool callbackproc (intptr hwnd, ref windowinfo wndinforef) <br/>{< br/> stringbuilder STR = new stringbuilder (512); <br/> getwindowtext (hwnd, STR, str. capacity); <br/> If (Str. tostring (). indexof (wndinforef. Wintitle, 0)> = 0) <br/>{< br/> wndinforef. hwnd = hwnd; <br/> getwindowrect (hwnd, ref (wndinforef. r); <br/>}</P> <p> return true; <br/>}< br/> Public intptr findthewindow () <br/>{< br/> callbackptr = new callbackptr (callbackproc); <br/> enumwindows (callbackptr, ref wininfo); <br/> return wininfo. hwnd; <br/>}< br/> Public void reposwindow (border B, double screenw, double screenh) <br/>{< br/> Double width = wininfo. r. right-wininfo. r. left; <br/> double height = wininfo. r. bottom-wininfo. r. top; <br/> double left = (screenw-width)/2; <br/> double right = (screenw-width)/2; <br/> double Top = (screenh-height)/2; <br/> double bottom = (screenh-height)/2; <br/> B. margin = New thickness (left, top, right, bottom); <br/>}< br/> example: <br/> Add a border element wndhost in XAML. Then add the following code to the WPF constructor <br/> ========================== ========< br/> This. initializecomponent (); <br/> string path; <br/> registrykey hkml = registry. localmachine; <br/> registrykey software = hkml. opensubkey ("software"); <br/> registrykey Tx = software. opensubkey ("Tencent"); <br/> registrykey qq2009 = Tx. opensubkey ("qq2009"); <br/> Path = qq2009.getvalue ("Install "). tostring () + "// bin // qq.exe"; <br/> embeddedapp Ea = new embeddedapp (wndhost, this. width, this. height, path, "qq2010"); <br/> wndhost. child = EA; <br/> embeddedapp Ea = new embeddedapp (wndhost, this. width, this. height, path, "qq2010"); <br/> wndhost. child = EA;