delphi - Chromium embedded minimal client WM_paint stops working after minimizing and restoring -


apparently, basic delphi chromium embedded minimal or cefclient demo unable focus window while minimized , restored. unable click on anything, however, if resize window, it's going normal, being able click , use browser usual.

later edit : i'm using dcef3 , latest version https://github.com/svn2github/dcef3 , cef3 3.1364.1094 more specific.

does have idea how repaint browser after minimizing , restoring in delphi xe3 ?

actual code:

program cefclient;  uses   windows, messages, ceflib;  type   tcustomclient = class(tcefclientown)   private     flifespan: iceflifespanhandler;   protected     function getlifespanhandler: iceflifespanhandler; override;   public     constructor create; override;   end;    tcustomlifespan = class(tceflifespanhandlerown)   protected     procedure onaftercreated(const browser: icefbrowser); override;     procedure onbeforeclose(const browser: icefbrowser); override;   end;  type   twindowproc = pointer;   wndproc = pointer;  var   window: hwnd;   handl: icefclient = nil;   brows: icefbrowser = nil;   browserid: integer = 0;   navigateto: ustring = 'http://google.com';  function cefwndproc(wnd: hwnd; message: uint; wparam: integer; lparam: integer): integer; stdcall; var   ps: paintstruct;   info: tcefwindowinfo;   rect: trect;   hdwp: thandle;   setting: tcefbrowsersettings; begin   case message of     wm_paint:       begin         beginpaint(wnd, ps);         endpaint(wnd, ps);         result := 0;       end;     wm_create:       begin         handl := tcustomclient.create;         getclientrect(wnd, rect);         fillchar(info, sizeof(info), 0);         info.style := ws_child or ws_visible or ws_clipchildren or ws_clipsiblings or ws_tabstop;         info.parent_window := wnd;         info.x := rect.left;         info.y := rect.top;         info.width := rect.right - rect.left;         info.height := rect.bottom - rect.top;         fillchar(setting, sizeof(setting), 0);         setting.size := sizeof(setting);         cefbrowserhostcreatesync(@info, handl, navigateto, @setting);         settimer(wnd, 1, 100, nil);         result := 0;       end;     wm_destroy:       begin         brows := nil;         postquitmessage(0);         result := defwindowproc(wnd, message, wparam, lparam);       end;     wm_setfocus:       begin         if brows <> nil           postmessage(brows.host.windowhandle, wm_setfocus, wparam, 0);         result := 0;       end;     wm_size:       begin         if(brows <> nil)         begin           // resize browser window , address bar match new frame           // window size           getclientrect(wnd, rect);           hdwp := begindeferwindowpos(1);           hdwp := deferwindowpos(hdwp, brows.host.windowhandle, 0, rect.left, rect.top,             rect.right - rect.left, rect.bottom - rect.top, swp_nozorder);           enddeferwindowpos(hdwp);         end;         result := defwindowproc(wnd, message, wparam, lparam);       end;     wm_close:       begin         if brows <> nil           brows.host.parentwindowwillclose;         result := defwindowproc(wnd, message, wparam, lparam);       end   else     result := defwindowproc(wnd, message, wparam, lparam);   end; end;  { tcustomclient }  constructor tcustomclient.create; begin   inherited;   flifespan := tcustomlifespan.create; end;  function tcustomclient.getlifespanhandler: iceflifespanhandler; begin   result := flifespan; end;  { tcustomlifespan }  procedure tcustomlifespan.onaftercreated(const browser: icefbrowser); begin   if not browser.ispopup   begin     // first browser     brows := browser;     browserid := brows.identifier;   end; end;  procedure tcustomlifespan.onbeforeclose(const browser: icefbrowser); begin   if browser.identifier = browserid     brows := nil; end;  var   wndclass : twndclass; begin   // multi process   cefsingleprocess := false;   if not cefloadlibdefault exit;   try     wndclass.style         := cs_hredraw or cs_vredraw;     wndclass.lpfnwndproc   := @cefwndproc;     wndclass.cbclsextra    := 0;     wndclass.cbwndextra    := 0;     wndclass.hinstance     := hinstance;     wndclass.hicon         := loadicon(0, idi_application);     wndclass.hcursor       := loadcursor(0, idc_arrow);     wndclass.hbrbackground := 0;     wndclass.lpszmenuname  := nil;     wndclass.lpszclassname := 'cefapp';      registerclass(wndclass);      window := createwindow(       'cefapp',       'chromium',       ws_overlappedwindow or ws_clipchildren,       integer(cw_usedefault),       integer(cw_usedefault),       integer(cw_usedefault),       integer(cw_usedefault),       0,       0,       hinstance,       nil);      showwindow(window, sw_show);     updatewindow(window);     cefrunmessageloop;       handl := nil;   end; end.


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