Inno Setup 网页显示插件 webctrl

2023-08-08 13:04:40

原文:Inno Setup 网页显示插件 webctrl

; -- Example.iss --
; restools
; http://restools.hanzify.org
; 插件名：webctrl.dll
; 插件功能：网络连接检测，创建网页页面。
; 插件大小：9 KB

; V2 增强操作函数，可以同时创建多达 256 个 Web 窗口。
; V2 例子中演示了建立一个小型浏览器以体现该版本中的函数如何使用。比起 V1 重点在于能同时创建多个 Web 窗口。

[Setup]
AppName=我的程序
AppVerName=我的程序 版本 1.5
DefaultDirName={pf}/我的程序

[Files]
Source: "webctrl.dll"; Flags: dontcopy
Source: "file.htm"; Flags: dontcopy
Source: "wizard.htm"; Flags: dontcopy
Source: "1.gif"; Flags: dontcopy
Source: "2.gif"; Flags: dontcopy
Source: "3.gif"; Flags: dontcopy

[code]
function GetSystemMetrics(nIndex: Integer): Integer; external 'GetSystemMetrics@user32.dll stdcall';
function GetWindowLong(Wnd: HWnd; Index: Integer): Longint; external 'GetWindowLongA@user32.dll stdcall';
function SetWindowLong(Wnd: HWnd; Index: Integer; NewLong: Longint): Longint; external 'SetWindowLongA@user32.dll stdcall';
////////////////////////////////////////////////////////////////////////////////////
// 检查网络连接是否正常
// lpszURL: 网址，如果这里设置为空网址，检测将会简单的检查网络状态，返回状态标志
// lpdwState: 状态标志，以下是标志值的解释
// 注意：当不用网址来检测网络连接时，只是检查当前是否符合网络连接的条件，但是并不等于
// 能正常连接 Internet，但是这种检测方式相当迅速，如果使用网址连接测试，如果网
// 络处于正常连接，检查速度也相当快，但是如果非正常，那么将会有一点时间延迟，因
// 为实际的连接测试有一个超时的限制来判断是否能够连接。但是这种检测方式是最直接
// 的，并能确实知道是否能够连接网络，所以你按照实际要求来选择检测方式。
//
//得到的 lpdwState 返回值可能是以下值的一个或几个值之和：
// INTERNET_STATE_CONNECTED ：$00000001 连接状态；
// INTERNET_STATE_DISCONNECTED ：$00000002 非连接状态（和 INTERNET_STATE_CONNECTED 对应）；
// INTERNET_STATE_DISCONNECTED_BY_USER：$00000010 用户请求的非连接状态
// INTERNET_STATE_IDLE ：$00000100 连接状态，并且空闲
// INTERNET_STATE_BUSY ：$00000200 连接状态，正在响应连接请求
function CheckConnectState(lpsURL: PChar; var lpdwState: dword): boolean; external 'checkconnectstate@files:webctrl.dll stdcall';

// 初始化 WebCtrl 插件
function InitWebCtrl(): Boolean; external 'initwebctrl@files:webctrl.dll stdcall';

// 释放 WebCtrl 插件
function UninitWebCtrl(): Boolean; external 'uninitwebctrl@files:webctrl.dll stdcall';

// 创建 WEB 窗口
function NewWebWnd(hWndParent: HWND; X, Y, nWidth, nHeight: Integer): HWND; external 'newwebwnd@files:webctrl.dll stdcall';

// 释放 WEB 窗口
function FreeWebWnd(hWndWeb: HWND): Boolean; external 'freewebwnd@files:webctrl.dll stdcall';

// 设置 WEB 窗口的父窗口
function WebWndSetParent(hWndWeb: HWND; hWndParent: HWND): Boolean; external 'webwndsetparent@files:webctrl.dll stdcall';

// 设置 WEB 窗口的位置大小
function WebWndSetBounds(hWndWeb: HWND; X, Y, nWidth, nHeight: Integer): Boolean; external 'webwndsetbounds@files:webctrl.dll stdcall';

// 显示 HTML 网页
function DisplayHTMLPage(hWndWeb: HWND; lpsURL: PChar): Boolean; external 'displayhtmlpage@files:webctrl.dll stdcall'; // ;

// 显示 HTML 字符串
function DisplayHTMLStr(hWndWeb: HWND; lpsHtmlText: PChar): Boolean; external 'displayhtmlstr@files:webctrl.dll stdcall';

// Web 页面 动作
function WebPageAction(hWndWeb: HWND; action: DWord): Boolean; external 'webpageaction@files:webctrl.dll stdcall';

const
SM_CXSCREEN = 0;
SM_CYSCREEN = 1;

WS_EX_CLIENTEDGE = $200;
GWL_EXSTYLE = -20;

WEBPAGE_GOBACK = 0;
WEBPAGE_GOFORWARD = 1;
WEBPAGE_GOHOME = 2;
WEBPAGE_SEARCH = 3;
WEBPAGE_REFRESH = 4;
WEBPAGE_STOP = 5;
var
UrlPage, HtmlPage, HtmlTextPage: TWizardPage;
WebHWND1, WebHWND2, WebHWND3, WebHWND4: HWND;
WebHWND_Browser: HWND;
Form_Browser: TForm;
AddrEdit: TNewEdit;
GoBtn: TNewButton;

function InitializeSetup(): Boolean;
begin
InitWebCtrl();
WebHWND1 := 0;
WebHWND2 := 0;
WebHWND3 := 0;
WebHWND4 := 0;
Result := True;
end;

procedure DeinitializeSetup();
begin
UninitWebCtrl();
end;

procedure GoBackBtnOnClick(Sender: TObject);
begin
WebPageAction(WebHWND_Browser, WEBPAGE_GOBACK);
end;

procedure GoForwardBtnOnClick(Sender: TObject);
begin
WebPageAction(WebHWND_Browser, WEBPAGE_GOFORWARD);
end;

procedure StopBtnOnClick(Sender: TObject);
begin
WebPageAction(WebHWND_Browser, WEBPAGE_STOP);
end;

procedure RefreshBtnOnClick(Sender: TObject);
begin
WebPageAction(WebHWND_Browser, WEBPAGE_REFRESH);
end;

procedure HomeBtnOnClick(Sender: TObject);
begin
WebPageAction(WebHWND_Browser, WEBPAGE_GOHOME);
end;

procedure GoBtnOnClick(Sender: TObject);
begin
DisplayHTMLPage(WebHWND_Browser, AddrEdit.Text);
end;

procedure BrowserFormResize(Sender: TObject);
var
W: Integer;
begin
WebWndSetBounds(WebHWND_Browser, 0, ScaleY(35), Form_Browser.ClientWidth,
Form_Browser.ClientHeight - ScaleY(35));
W := Form_Browser.Width - ScaleX(285);
if W <= 0 then W := 1;
AddrEdit.Width := W;
GoBtn.SetBounds(AddrEdit.Left + AddrEdit.Width + ScaleX(2), ScaleY(5), ScaleX(30),
WizardForm.CancelButton.Height);
end;

procedure EditKeyPress(Sender: TObject; var Key: Char);
begin
if Key = #13 then
DisplayHTMLPage(WebHWND_Browser, AddrEdit.Text);
end;

procedure WizardBtnOnClick(Sender: TObject);
var
ScreenWidth, ScreenHeight: Integer;
Btn: TNewButton;
begin
Form_Browser := TForm.Create(WizardForm);
try
Form_Browser.Caption := 'ThinBrowser';
Form_Browser.BorderIcons := [biSystemMenu, biMaximize];
ScreenWidth := GetSystemMetrics(SM_CXSCREEN);
ScreenHeight := GetSystemMetrics(SM_CYSCREEN);
Form_Browser.SetBounds((ScreenWidth - ScaleX(600)) div 2, (ScreenHeight - ScaleY(400)) div 2,
ScaleX(600), ScaleY(400));
WebHWND_Browser := NewWebWnd(Form_Browser.Handle, 0, 0, Form_Browser.ClientWidth,
Form_Browser.ClientHeight);
SetWindowLong(Form_Browser.Handle, GWL_EXSTYLE, GetWindowLong(
WebHWND_Browser, GWL_EXSTYLE) or WS_EX_CLIENTEDGE);

Btn := TNewButton.Create(Form_Browser);
Btn.SetBounds(ScaleX(5), ScaleY(5), ScaleX(40), WizardForm.CancelButton.Height);
Btn.Caption := '&Back';
Btn.OnClick := @GoBackBtnOnClick;
Btn.Parent := Form_Browser;

Btn := TNewButton.Create(Form_Browser);
Btn.SetBounds(ScaleX(47), ScaleY(5), ScaleX(55), WizardForm.CancelButton.Height);
Btn.Caption := '&Forward';
Btn.OnClick := @GoForwardBtnOnClick;
Btn.Parent := Form_Browser;

Btn := TNewButton.Create(Form_Browser);
Btn.SetBounds(ScaleX(104), ScaleY(5), ScaleX(40), WizardForm.CancelButton.Height);
Btn.Caption := '&Stop';
Btn.OnClick := @StopBtnOnClick;
Btn.Parent := Form_Browser;

Btn := TNewButton.Create(Form_Browser);
Btn.SetBounds(ScaleX(146), ScaleY(5), ScaleX(50), WizardForm.CancelButton.Height);
Btn.Caption := '&Refresh';
Btn.OnClick := @RefreshBtnOnClick;
Btn.Parent := Form_Browser;

Btn := TNewButton.Create(Form_Browser);
Btn.SetBounds(ScaleX(198), ScaleY(5), ScaleX(40), WizardForm.CancelButton.Height);
Btn.Caption := '&Home';
Btn.OnClick := @HomeBtnOnClick;
Btn.Parent := Form_Browser;

AddrEdit := TNewEdit.Create(Form_Browser);
AddrEdit.Left := ScaleX(240);
AddrEdit.Top := ScaleY(6);
AddrEdit.Parent := Form_Browser;
AddrEdit.Text := 'about:blank';
AddrEdit.OnKeyPress := @EditKeyPress;

GoBtn := TNewButton.Create(Form_Browser);
GoBtn.Caption := '&Go';
GoBtn.OnClick := @GoBtnOnClick;
GoBtn.Parent := Form_Browser;

BrowserFormResize(Form_Browser);
Form_Browser.OnResize := @BrowserFormResize;
Form_Browser.ActiveControl := AddrEdit;
Form_Browser.ShowModal();
FreeWebWnd(WebHWND_Browser);
finally
Form_Browser.Free();
end;
end;

procedure InitializeWizard();
var
State: DWord;
s: string;
BrowserBtn: TNewButton;
begin
State := 0;
s := '';
// 如果需要进行网址连接测试，取消下面代码的注释
// s := 'http://www.google.cn';

if CheckConnectState(s, State) then
MsgBox('网络已经连接。', mbInformation, MB_OK)
else
MsgBox('网络未连接。', mbCriticalError, MB_OK);
MsgBox(inttostr(State), mbInformation, MB_OK);

ExtractTemporaryFile('wizard.htm');
ExtractTemporaryFile('file.htm');
ExtractTemporaryFile('1.gif');
ExtractTemporaryFile('2.gif');
ExtractTemporaryFile('3.gif');

WebHWND1 := NewWebWnd(WizardForm.WelcomePage.Handle, 0, 0, WizardForm.WizardBitmapImage.Width, WizardForm.WelcomePage.Height);
DisplayHTMLPage(WebHWND1, ExpandConstant('{tmp}/wizard.htm'));

UrlPage := CreateCustomPage(wpWelcome, '测试 Web 页面', '网址: http://www.google.cn');

HtmlPage := CreateCustomPage(UrlPage.ID, '测试 HTML文件 页面', '文件: file.htm');

HtmlTextPage := CreateCustomPage(HtmlPage.ID, '测试 HTML文本 页面', '临时自定义 HTML 字符串');

BrowserBtn := TNewButton.Create(WizardForm);
BrowserBtn.Left := WizardForm.ClientWidth - WizardForm.CancelButton.Left - WizardForm.CancelButton.Width;
BrowserBtn.Top := WizardForm.CancelButton.Top;
BrowserBtn.Width := WizardForm.CancelButton.Width;
BrowserBtn.Height := WizardForm.CancelButton.Height;
BrowserBtn.Caption := '&Browser...';
BrowserBtn.OnClick := @WizardBtnOnClick;
BrowserBtn.Parent := WizardForm;
end;

procedure CurPageChanged(CurPageID: Integer);
begin
if CurPageID = wpWelcome then
WebWndSetParent(WebHWND1, WizardForm.WelcomePage.Handle)
else
if CurPageID = wpFinished then
WebWndSetParent(WebHWND1, WizardForm.FinishedPage.Handle)
else
if (CurPageID = UrlPage.ID) and (WebHWND2 = 0) then
begin
WebHWND2 := NewWebWnd(UrlPage.Surface.Handle, 0, 0, UrlPage.Surface.Width, UrlPage.Surface.Height);
DisplayHTMLPage(WebHWND2, 'http://www.google.cn')
end else
if (CurPageID = HtmlPage.ID) and (WebHWND3 = 0) then
begin
WebHWND3 := NewWebWnd(HtmlPage.Surface.Handle, 0, 0, HtmlPage.Surface.Width, HtmlPage.Surface.Height);
DisplayHTMLPage(WebHWND3, ExpandConstant('{tmp}/file.htm'));
end
else
if (CurPageID = HtmlTextPage.ID) and (WebHWND4 = 0) then
begin
WebHWND4 := NewWebWnd(HtmlTextPage.Surface.Handle, 0, 0, HtmlTextPage.Surface.Width, HtmlTextPage.Surface.Height);
DisplayHTMLStr(WebHWND4, '<b>I''m a <u>HTML text</u></b>');
end;
end;

附图：
Inno Setup 网页显示插件 webctrl

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