Title: execute a Javascript function in a Webbrowser/ IE Document?
uses
MSHTML_TLB, SHDocVw, ShellAPI;
// function to execute a script function
function ExecuteScript(doc: IHTMLDocument2; script: string; language: string): Boolean;
var
win: IHTMLWindow2;
Olelanguage: Olevariant;
begin
if doc nil then
begin
try
win := doc.parentWindow;
if win nil then
begin
try
Olelanguage := language;
win.ExecScript(script, Olelanguage);
finally
win := nil;
end;
end;
finally
doc := nil;
end;
end;
end;
// 2 Examples how to login to gmx homepage
procedure FillInGMXForms(WB: ShDocVW_TLB.IWebbrowser2; IDoc1: IHTMLDocument2;
Document: Variant; AKennung, APasswort: string);
const
IEFields: array[1..4] of string = ('INPUT', 'text', 'INPUT', 'password');
var
IEFieldsCounter: Integer;
i: Integer;
m: Integer;
ovElements: OleVariant;
begin
if Pos('GMX - Homepage', Document.Title) 0 then
while WB.ReadyState READYSTATE_COMPLETE do
Application.ProcessMessages;
// count forms on document and iterate through its forms
IEFieldsCounter := 0;
for m := 0 to Document.forms.Length - 1 do
begin
ovElements := Document.forms.Item(m).elements;
// iterate through elements
for i := ovElements.Length - 1 downto 0 do
begin
try
// if input fields found, try to fill them out
if (ovElements.item(i).tagName = IEFields[1]) and
(ovElements.item(i).type = IEFields[2]) then
begin
ovElements.item(i).Value := AKennung;
Inc(IEFieldsCounter);
end;
if (ovElements.item(i).tagName = IEFields[3]) and
(ovElements.item(i).type = IEFields[4]) then
begin
ovElements.item(i).Value := APasswort;
Inc(IEFieldsCounter);
end;
except
// failed...
end;
end; { for i...}
end; { for m }
// if the fields are filled in, submit.
if IEFieldsCounter = 3 then ExecuteScript(iDoc1, 'document.login.submit()',
'JavaScript');
end;
function LoginGMX_IE(AKennung, APasswort: string): Boolean;
var
ShellWindow: IShellWindows;
WB: ShDocVW_TLB.IWebbrowser2;
spDisp: IDispatch;
IDoc1: IHTMLDocument2;
Document: Variant;
k: Integer;
begin
ShellWindow := CoShellWindows.Create;
// get the running instance of Internet Explorer
for k := 0 to ShellWindow.Count do
begin
spDisp := ShellWindow.Item(k);
if spDisp = nil then Continue;
// QueryInterface determines if an interface can be used with an object
spDisp.QueryInterface(iWebBrowser2, WB);
if WB nil then
begin
WB.Document.QueryInterface(IHTMLDocument2, iDoc1);
if iDoc1 nil then
begin
WB := ShellWindow.Item(k) as ShDocVW_TLB.IWebbrowser2;
Document := WB.Document;
// if GMX page...
FillInGMXForms(WB, IDoc1, Document, AKennung, APasswort);
end; { idoc nil }
end; { wb nil }
end; { for k }
end;
// Example 1: Navigate to the gmx homepage in the IE browser an login
procedure TForm1.Button1Click(Sender: TObject);
begin
ShellExecute(Handle,
'open',
'http://www.gmx.ch',
nil,
nil,
SW_SHOW);
Sleep(2000);
LoginGMX_IE('user@gmx.net', 'pswd');
end;
// Example 2: navigate to the gmx homepage in the Webbrowser an login
procedure TForm1.Button2Click(Sender: TObject);
var
IDoc1: IHTMLDocument2;
Web: ShDocVW_TLB.IWebBrowser2;
begin
Webbrowser1.Navigate('http://www.gmx.ch');
while Webbrowser1.ReadyState READYSTATE_COMPLETE do
Application.ProcessMessages;
Webbrowser1.Document.QueryInterface(IHTMLDocument2, iDoc1);
Web := WebBrowser1.ControlInterface;
FillInGMXForms(Web, iDoc1, Webbrowser1.Document, 'user@gmx.net', 'pswd');
end;