先说下参考的资料:
- 主要代码参考 http://mailysf.blog.zj.com/d-143742.html 。是这个博客写的示例为主干。但我在win7(64bit) + IE9下无效,所以参考其他代码做了改动,就成功了。
- 陈省的博客 http://delphi.sharpplus.com/Delphi/delphi_ie_band.htm 对整个delphi开发IE Toolbar和BHO都有所论述,很不错。
- 真正解决问题的代码来自于MS, http://support.microsoft.com/kb/196339/en-us 可以下载C++的源码。文章中也说得按键无效的实质问题所在:
Whenever a key is pressed, three things occur:In order to alleviate these problems, WebBand implements IOleControlSite. In the IOleControlSite::OnFocus method, the WebBrowser's IInputObjectSite::OnFocusChangesIS must be called to tell the WebBrowser that WebBand now has the focus.
- WebBand's IInputObject::HasFocusIO method is called to see if WebBand currently has the focus.
- The IInputObject::UIActivateIO method is called to tell WebBand that is being activated.
- The IInputObject::TranslateAccelerator method is called. It is here that WebBand passes the keystroke to the hosted WebBrowser control. This causes accelerator keys such as backspace and delete to be processed.
下面代码主要都是资料1中的,只是IInputObject::HasFocusIO的实现做了改变。
- unit UTestTextBox;
- interface
- uses
- Windows, ActiveX, Classes, ComObj, MSHTML, SHDocVw, ShellAPI, TlHelp32,
- ShlObj, uIEBar, Dialogs,
- Registry, Messages;
- type
- TTestTextBoxFactory = class(TComObjectFactory)
- public
- procedure UpdateRegistry(Register: Boolean); override;
- end;
- TTestTextBox = class(TComObject, IDeskBand, IObjectWithSite,
- IPersistStreamInit, IInputObject)
- private
- HasFocus: Boolean;
- frmIE: TfrmIEBar;
- m_pSite: IInputObjectSite;
- m_hwndParent: HWND;
- m_hWnd: HWND;
- m_dwViewMode: Integer;
- m_dwBandID: Integer;
- m_pBrowseOC: IWebBrowser2;
- SavedWndProc: TWndMethod;
- protected
- procedure FocusChange(bHasFocus: Boolean);
- procedure BandWndProc(var Message: TMessage);
- public
- { Declare IDeskBand methods here }
- function GetBandInfo(dwBandID, dwViewMode: DWORD; var pdbi: TDeskBandInfo)
- : HResult; stdcall;
- function ShowDW(fShow: BOOL): HResult; stdcall;
- function CloseDW(dwReserved: DWORD): HResult; stdcall;
- function ResizeBorderDW(var prcBorder: TRect; punkToolbarSite: IUnknown;
- fReserved: BOOL): HResult; stdcall;
- function GetWindow(out wnd: HWND): HResult; stdcall;
- function ContextSensitiveHelp(fEnterMode: BOOL): HResult; stdcall;
- { Declare IObjectWithSite methods here }
- function SetSite(const pUnkSite: IUnknown): HResult; stdcall;
- function GetSite(const riid: TIID; out site: IUnknown): HResult; stdcall;
- { Declare IPersistStream methods here }
- function GetClassID(out classID: TCLSID): HResult; stdcall;
- function IsDirty: HResult; stdcall;
- function InitNew: HResult; stdcall;
- function Load(const stm: IStream): HResult; stdcall;
- function Save(const stm: IStream; fClearDirty: BOOL): HResult; stdcall;
- function GetSizeMax(out cbSize: Largeint): HResult; stdcall;
- { Declare IInputObject methods here }
- function UIActivateIO(fActivate: BOOL; var lpMsg: TMsg): HResult; stdcall;
- function HasFocusIO: HResult; stdcall;
- function TranslateAcceleratorIO(var lpMsg: TMsg): HResult; stdcall;
- end;
- const
- Class_TestTextBox: TGUID = '{9FC0A716-35A4-4ACB-8565-EAA1C2D9E0A1}';
- // 以下是系统接口的IID
- IID_IUnknown: TGUID = (D1: $00000000; D2: $0000; D3: $0000;
- D4: ($C0, $00, $00, $00, $00, $00, $00, $46));
- IID_IOleObject: TGUID = (D1: $00000112; D2: $0000; D3: $0000;
- D4: ($C0, $00, $00, $00, $00, $00, $00, $46));
- IID_IOleWindow: TGUID = (D1: $00000114; D2: $0000; D3: $0000;
- D4: ($C0, $00, $00, $00, $00, $00, $00, $46));
- IID_IInputObjectSite: TGUID = (D1: $F1DB8392; D2: $7331; D3: $11D0;
- D4: ($8C, $99, $00, $A0, $C9, $2D, $BF, $E8));
- sSID_SInternetExplorer: TGUID = '{0002DF05-0000-0000-C000-000000000046}';
- sIID_IWebBrowserApp: TGUID = '{0002DF05-0000-0000-C000-000000000046}';
- // 面板所允许的最小宽度和高度。
- MIN_SIZE_X = 54;
- MIN_SIZE_Y = 23;
- EB_CLASS_NAME = 'BackSpace有效性测试';
- implementation
- uses ComServ;
- { TTestTextBoxFactory }
- procedure TTestTextBoxFactory.UpdateRegistry(Register: Boolean);
- var
- classID: string;
- a: Integer;
- begin
- inherited UpdateRegistry(Register);
- if Register then
- begin
- classID := GUIDToString(Class_TestTextBox);
- with TRegistry.Create do
- begin
- try
- // 添加附加的注册表项
- RootKey := HKEY_LOCAL_MACHINE;
- OpenKey('\SOFTWARE\Microsoft\Internet Explorer\Toolbar', False);
- a := 0;
- WriteBinaryData(GUIDToString(Class_TestTextBox), a, 0);
- OpenKey('\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved',
- True);
- WriteString(GUIDToString(Class_TestTextBox), EB_CLASS_NAME);
- RootKey := HKEY_CLASSES_ROOT;
- OpenKey('\CLSID\' + GUIDToString(Class_TestTextBox), False);
- WriteString('', EB_CLASS_NAME);
- finally
- Free;
- end;
- end;
- end
- else
- begin
- with TRegistry.Create do
- begin
- try
- RootKey := HKEY_LOCAL_MACHINE;
- OpenKey('\SOFTWARE\Microsoft\Internet Explorer\Toolbar', False);
- DeleteValue(GUIDToString(Class_TestTextBox));
- OpenKey('\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved',
- False);
- DeleteValue(GUIDToString(Class_TestTextBox));
- finally
- Free;
- end;
- end;
- end;
- end;
- { TTestTextBox }
- procedure TTestTextBox.BandWndProc(var Message: TMessage);
- begin
- if (Message.Msg = WM_PARENTNOTIFY) then
- begin
- HasFocus := True;
- FocusChange(HasFocus);
- end;
- SavedWndProc(Message);
- end;
- function TTestTextBox.CloseDW(dwReserved: DWORD): HResult;
- begin
- if Assigned(frmIE) then
- begin
- frmIE.Free;
- frmIE := nil;
- end;
- Result := S_OK;
- end;
- function TTestTextBox.ContextSensitiveHelp(fEnterMode: BOOL): HResult;
- begin
- Result := E_NOTIMPL;
- end;
- procedure TTestTextBox.FocusChange(bHasFocus: Boolean);
- begin
- if m_pSite <> nil then
- m_pSite.OnFocusChangeIS(Self, bHasFocus);
- end;
- function TTestTextBox.GetBandInfo(dwBandID, dwViewMode: DWORD;
- var pdbi: TDeskBandInfo): HResult;
- begin
- Result := E_INVALIDARG;
- if not Assigned(frmIE) then
- frmIE := TfrmIEBar.CreateParented(m_hwndParent);
- if (@pdbi <> nil) then
- begin
- m_dwBandID := dwBandID;
- m_dwViewMode := dwViewMode;
- if (pdbi.dwMask and DBIM_MINSIZE) <> 0 then
- begin
- pdbi.ptMinSize.x := MIN_SIZE_X;
- pdbi.ptMinSize.y := MIN_SIZE_Y;
- end;
- if (pdbi.dwMask and DBIM_MAXSIZE) <> 0 then
- begin
- pdbi.ptMaxSize.x := -1;
- pdbi.ptMaxSize.y := -1;
- end;
- if (pdbi.dwMask and DBIM_INTEGRAL) <> 0 then
- begin
- pdbi.ptIntegral.x := 1;
- pdbi.ptIntegral.y := 1;
- end;
- if (pdbi.dwMask and DBIM_ACTUAL) <> 0 then
- begin
- pdbi.ptActual.x := 0;
- pdbi.ptActual.y := 0;
- end;
- if (pdbi.dwMask and DBIM_MODEFLAGS) <> 0 then
- pdbi.dwModeFlags := DBIMF_VARIABLEHEIGHT;
- if (pdbi.dwMask and DBIM_BKCOLOR) <> 0 then
- pdbi.dwMask := pdbi.dwMask and (not DBIM_BKCOLOR);
- end;
- end;
- function TTestTextBox.GetClassID(out classID: TCLSID): HResult;
- begin
- classID := Class_TestTextBox;
- Result := S_OK;
- end;
- function TTestTextBox.GetSite(const riid: TIID; out site: IInterface): HResult;
- begin
- if Assigned(m_pSite) then
- Result := m_pSite.QueryInterface(riid, site)
- else
- Result := E_FAIL;
- end;
- function TTestTextBox.GetSizeMax(out cbSize: Largeint): HResult;
- begin
- Result := E_NOTIMPL;
- end;
- function TTestTextBox.GetWindow(out wnd: HWND): HResult;
- begin
- wnd := frmIE.Handle;
- SavedWndProc := frmIE.WindowProc;
- frmIE.WindowProc := BandWndProc;
- Result := S_OK;
- end;
- function TTestTextBox.HasFocusIO: HResult;
- var
- hwndCur, hwndTmp: HWND;
- begin
- hwndCur := GetFocus;
- hwndTmp := frmIE.Handle;
- while (hwndCur <> 0) and (hwndTmp <> 0) do
- begin
- if (hwndCur = hwndTmp) then
- begin
- Result := S_OK;
- exit;
- end;
- hwndTmp := Windows.GetWindow(hwndTmp, GW_CHILD);
- end;
- Result := S_FALSE;
- end;
- function TTestTextBox.InitNew: HResult;
- begin
- Result := E_NOTIMPL;
- end;
- function TTestTextBox.IsDirty: HResult;
- begin
- Result := S_FALSE;
- end;
- function TTestTextBox.Load(const stm: IStream): HResult;
- begin
- Result := S_OK;
- end;
- function TTestTextBox.ResizeBorderDW(var prcBorder: TRect;
- punkToolbarSite: IInterface; fReserved: BOOL): HResult;
- begin
- Result := E_NOTIMPL;
- end;
- function TTestTextBox.Save(const stm: IStream; fClearDirty: BOOL): HResult;
- begin
- Result := S_OK;
- end;
- function TTestTextBox.SetSite(const pUnkSite: IInterface): HResult;
- var
- pOleWindow: IOleWindow;
- pOLEcmd: IOleCommandTarget;
- pSP: IServiceProvider;
- rc: TRect;
- begin
- if Assigned(pUnkSite) then
- begin
- m_hwndParent := 0;
- m_pSite := pUnkSite as IInputObjectSite;
- pOleWindow := pUnkSite as IOleWindow;
- // 获得父窗口IE面板窗口的句柄
- pOleWindow.GetWindow(m_hwndParent);
- if (m_hwndParent = 0) then
- begin
- Result := E_FAIL;
- exit;
- end;
- // 获得父窗口区域
- GetClientRect(m_hwndParent, rc);
- if not Assigned(frmIE) then
- begin
- // 建立TIEForm窗口,父窗口为m_hwndParent
- frmIE := TfrmIEBar.CreateParented(m_hwndParent);
- m_hWnd := frmIE.Handle;
- SetWindowLong(frmIE.Handle, GWL_STYLE, GetWindowLong(frmIE.Handle,
- GWL_STYLE) Or WS_CHILD);
- // 根据父窗口区域设置窗口位置
- with frmIE do
- begin
- Left := rc.Left;
- Top := rc.Top;
- Width := rc.Right - rc.Left;
- Height := rc.Bottom - rc.Top;
- end;
- frmIE.Visible := True;
- // 获得与浏览器相关联的Webbrowser对象。
- pOLEcmd := pUnkSite as IOleCommandTarget;
- pSP := pOLEcmd as IServiceProvider;
- if Assigned(pSP) then
- begin
- pSP.QueryService(IWebbrowserApp, IWebBrowser2, frmIE.IEThis);
- end;
- end;
- end;
- Result := S_OK;
- end;
- function TTestTextBox.ShowDW(fShow: BOOL): HResult;
- begin
- HasFocus := fShow;
- FocusChange(HasFocus);
- Result := S_OK;
- end;
- function TTestTextBox.TranslateAcceleratorIO(var lpMsg: TMsg): HResult;
- begin
- if (lpMsg.wParam <> VK_TAB) then
- begin
- TranslateMessage(lpMsg);
- DispatchMessage(lpMsg);
- Result := S_OK;
- end
- else
- begin
- Result := S_FALSE;
- end;
- end;
- function TTestTextBox.UIActivateIO(fActivate: BOOL; var lpMsg: TMsg): HResult;
- begin
- HasFocus := fActivate;
- if HasFocus then
- frmIE.SetFocus;
- Result := S_OK;
- end;
- initialization
- TTestTextBoxFactory.Create(ComServer, TTestTextBox, Class_TestTextBox,
- 'BackSpace有效性测试', '测试输入框中的BackSpace', ciMultiInstance, tmApartment);
- end.
- unit uIEBar;
- interface
- uses
- Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
- Dialogs, StdCtrls, SHDocVw;
- type
- TfrmIEBar = class(TForm)
- TxtUrl: TEdit;
- procedure FormActivate(Sender: TObject);
- private
- { Private declarations }
- public
- { Public declarations }
- IEThis: IWebbrowser2;
- end;
- var
- frmIE: TfrmIEBar;
- implementation
- {$R *.dfm}
- procedure TfrmIEBar.FormActivate(Sender: TObject);
- begin
- TxtUrl.SetFocus;
- end;
- end.
'delphi' 카테고리의 다른 글
dkssudgktpdy를 안녕하세요로 변환 (0) | 2013.11.19 |
---|---|
handling dblclicked string_grid cell (0) | 2013.05.23 |
한글 자소 (0) | 2013.01.01 |
ie 툴바 (0) | 2012.11.23 |
Chat application with Delphi source (0) | 2012.11.17 |