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  • Overview
  • Control in a window, in a report, or in a static or dynamic page
  • Use in a page
  • Creating an HTML control
  • Creating an HTML control in a window
  • Creating an HTML control in a page
  • Creating an HTML control in a report
  • Window control: Characteristics
  • Options of the "General" tab
  • Conditions for using the ActiveX mode
  • Managing local images
  • "Enable zoom" ("UI" tab in the control description window)
  • Incompatibility between the IE ActiveX (and oAuth2) and the use of .NET assembly
  • Page control: Characteristics
  • Description window
  • Report control: Characteristics
  • Description window and programming
WINDEV
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WEBDEV
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Stored procedures
Overview

Control in a window, in a report, or in a static or dynamic page

Versions 16 and later
Android The HTML controls are now available for the Android applications.
New in version 16
Android The HTML controls are now available for the Android applications.
Android The HTML controls are now available for the Android applications.
Versions 17 and later
iPhone/iPad HTML controls are now available for iPhone/iPad applications.
New in version 17
iPhone/iPad HTML controls are now available for iPhone/iPad applications.
iPhone/iPad HTML controls are now available for iPhone/iPad applications.
Versions 18 and later
Universal Windows 10 App HTML controls are now available for applications in Windows Store apps mode.
New in version 18
Universal Windows 10 App HTML controls are now available for applications in Windows Store apps mode.
Universal Windows 10 App HTML controls are now available for applications in Windows Store apps mode.
The HTML control can be used:
  • WINDEVAndroidiPhone/iPadUniversal Windows 10 App In a window.
    The HTML control of a window is used to display an HTML page.
    Versions 26 and later
    This control corresponds to the HTML Display control.
    New in version 26
    This control corresponds to the HTML Display control.
    This control corresponds to the HTML Display control.
  • WEBDEV - Server codePHP In a page.
    The HTML control of a page is used to display or use an HTML code or a JavaScript code. This code can correspond to HTML scripts for example. The HTML control cannot be used to display an HTML page or an HTML site. This control can only be used to display an HTML code.
  • Versions 18 and later
    WINDEVWEBDEV - Server codeWindows In a report.
    The HTML control of a report is used to print an HTML code or the content of a local page.
    New in version 18
    WINDEVWEBDEV - Server codeWindows In a report.
    The HTML control of a report is used to print an HTML code or the content of a local page.
    WINDEVWEBDEV - Server codeWindows In a report.
    The HTML control of a report is used to print an HTML code or the content of a local page.
WEBDEV - Server codePHP

Use in a page

The HTML control of a page is used to display or use an HTML code or a JavaScript code. This code can correspond to HTML scripts for example. The HTML control cannot be used to display an HTML page or an HTML site. This control can only be used to display an HTML code.
An HTML control can be programmed in server code only if the control is defined as being a "Dynamic" control. The HTML control cannot be associated with an item of a data file.
Caution:
  • When the control is defined as being a dynamic control, it can only be assigned by programming.
  • The option "Forbid the execution of JavaScript scripts" is checked by default ("General" tab of control description).
If the window displayed in the HTML control contains scripts and if the user clicks active areas in this HTML control (forms, tab, ...), the requested action triggers the opening of default browser and displays the URL of HTML control in order to allow the user to run these scripts.
To allow the user to navigate inside the HTML control, uncheck "Forbid the execution of JavaScript scripts".
Creating an HTML control
WINDEVAndroidiPhone/iPadUniversal Windows 10 App

Creating an HTML control in a window

Versions 26 and later
In a window, the HTML control corresponds to the HTML Display control.
New in version 26
In a window, the HTML control corresponds to the HTML Display control.
In a window, the HTML control corresponds to the HTML Display control.
To create an HTML Display control in a window:
  1. On the "Creation" pane, in the "Other controls" group, expand "HTML" and select "HTML Display".
  2. Click at the desired location to create the control. The control appears in the editor.
To view the characteristics of the control, select "Description" in the context menu.
WEBDEV - Server codePHP

Creating an HTML control in a page

To create an HTML control in a page:
  1. On the "Creation" pane, in the "Integration" group, click "HTML".
  2. Click where you want to create the control in the page. The control appears in the editor.
To view the characteristics of the control, select "Description" in the context menu.
WINDEVWEBDEV - Server codeWindows

Creating an HTML control in a report

To create an HTML control in a report:
  1. On the "Creation" pane, in the "Text" group, click "HTML".
  2. Click where the control will be created in the report. The control appears in the editor.
To view the characteristics of the control, select "Description" in the context menu.
Remark: From version 22, the HTML control in a report corresponds to an HTML Static control.
WINDEVAndroidiPhone/iPadUniversal Windows 10 App
Window control: Characteristics

Options of the "General" tab

The "General" tab in the description window of control is used to:
  • type HTML code or the address of HTML page to display.
    Remark: Any HTML code entered must be between the <HTML> and </HTML> tags.
  • WINDEVAndroidiPhone/iPad forbid the execution of scripts. This option is used to allow (or prevent) the execution of scripts called from the HTML code of the control.
    iPhone/iPad This option is ignored: the execution of scripts is always allowed.
    Versions 23 and later
    If this option is unchecked, you can:
    • execute JavaScript code in the context of the web page displayed by the HTML control. To do so, use ExecuteJS.
    • allow the execution of WLanguage procedures from the JavaScript code via the option "Allow the WLanguage call from the HTML code (JavaScript WL.Execute function)".
      If this option is selected, simply use WL.Execute in the HTML code of the control to execute a WLanguage procedure. The following syntax must be used:
      WL.Execute(<WLanguage procedure name>, <Parameter>)
      where:
      • <WLanguage procedure name> corresponds to the name of the procedure to be executed.
        CAUTION: The WLanguage procedure must necessarily expect a single parameter.
      • <Parameter> corresponds to a character string that will be passed to the procedure. This parameter is mandatory.
      If this option is selected, simply use WL.Execute in the HTML code of the control to execute a WLanguage procedure. The following syntax must be used:
      WL.Execute(<WLanguage procedure name>, <Parameter>)
      where:
      • <WLanguage procedure name> corresponds to the name of the procedure to be executed.
        CAUTION: The WLanguage procedure must necessarily expect a single parameter.
      • <Parameter N> corresponds to the different parameters to be passed to the procedure:
        • Number of parameters:
          • WindowsiPhone/iPad between 0 and N.
          • Android between 0 and 10.
        • Type of parameters:
          • WindowsiPhone/iPad The parameters of the WLanguage procedure will be passed according to their type: boolean, string, number, null.
          • Android The parameters of the WLanguage procedure will always be passed as strings.
      Example:
      • WLanguage procedure
        PROCEDURE ProcFromJS(t)
        ToastDisplay("Called from JS: " + t)
      • Code of HTML control:
        s is string = [
        <html>
        <head>
        <title> A simple example
        </title>
        <script>
        function myFunction()
        {
        WL.Execute("ProcFromJS","titaa");
        }
        </script>
        </head>
        <body>
        <h1> This is an HTML page </h1>
        <p id="demo">A paragraph</p>
        <button type="button" onclick="myFunction()">Try</button>
        </body>
        </html>
        ]
        HTM_NoName1 = s
    New in version 23
    If this option is unchecked, you can:
    • execute JavaScript code in the context of the web page displayed by the HTML control. To do so, use ExecuteJS.
    • allow the execution of WLanguage procedures from the JavaScript code via the option "Allow the WLanguage call from the HTML code (JavaScript WL.Execute function)".
      If this option is selected, simply use WL.Execute in the HTML code of the control to execute a WLanguage procedure. The following syntax must be used:
      WL.Execute(<WLanguage procedure name>, <Parameter>)
      where:
      • <WLanguage procedure name> corresponds to the name of the procedure to be executed.
        CAUTION: The WLanguage procedure must necessarily expect a single parameter.
      • <Parameter> corresponds to a character string that will be passed to the procedure. This parameter is mandatory.
      If this option is selected, simply use WL.Execute in the HTML code of the control to execute a WLanguage procedure. The following syntax must be used:
      WL.Execute(<WLanguage procedure name>, <Parameter>)
      where:
      • <WLanguage procedure name> corresponds to the name of the procedure to be executed.
        CAUTION: The WLanguage procedure must necessarily expect a single parameter.
      • <Parameter N> corresponds to the different parameters to be passed to the procedure:
        • Number of parameters:
          • WindowsiPhone/iPad between 0 and N.
          • Android between 0 and 10.
        • Type of parameters:
          • WindowsiPhone/iPad The parameters of the WLanguage procedure will be passed according to their type: boolean, string, number, null.
          • Android The parameters of the WLanguage procedure will always be passed as strings.
      Example:
      • WLanguage procedure
        PROCEDURE ProcFromJS(t)
        ToastDisplay("Called from JS: " + t)
      • Code of HTML control:
        s is string = [
        <html>
        <head>
        <title> A simple example
        </title>
        <script>
        function myFunction()
        {
        WL.Execute("ProcFromJS","titaa");
        }
        </script>
        </head>
        <body>
        <h1> This is an HTML page </h1>
        <p id="demo">A paragraph</p>
        <button type="button" onclick="myFunction()">Try</button>
        </body>
        </html>
        ]
        HTM_NoName1 = s
    If this option is unchecked, you can:
    • execute JavaScript code in the context of the web page displayed by the HTML control. To do so, use ExecuteJS.
    • allow the execution of WLanguage procedures from the JavaScript code via the option "Allow the WLanguage call from the HTML code (JavaScript WL.Execute function)".
      If this option is selected, simply use WL.Execute in the HTML code of the control to execute a WLanguage procedure. The following syntax must be used:
      WL.Execute(<WLanguage procedure name>, <Parameter>)
      where:
      • <WLanguage procedure name> corresponds to the name of the procedure to be executed.
        CAUTION: The WLanguage procedure must necessarily expect a single parameter.
      • <Parameter> corresponds to a character string that will be passed to the procedure. This parameter is mandatory.
      If this option is selected, simply use WL.Execute in the HTML code of the control to execute a WLanguage procedure. The following syntax must be used:
      WL.Execute(<WLanguage procedure name>, <Parameter>)
      where:
      • <WLanguage procedure name> corresponds to the name of the procedure to be executed.
        CAUTION: The WLanguage procedure must necessarily expect a single parameter.
      • <Parameter N> corresponds to the different parameters to be passed to the procedure:
        • Number of parameters:
          • WindowsiPhone/iPad between 0 and N.
          • Android between 0 and 10.
        • Type of parameters:
          • WindowsiPhone/iPad The parameters of the WLanguage procedure will be passed according to their type: boolean, string, number, null.
          • Android The parameters of the WLanguage procedure will always be passed as strings.
      Example:
      • WLanguage procedure
        PROCEDURE ProcFromJS(t)
        ToastDisplay("Called from JS: " + t)
      • Code of HTML control:
        s is string = [
        <html>
        <head>
        <title> A simple example
        </title>
        <script>
        function myFunction()
        {
        WL.Execute("ProcFromJS","titaa");
        }
        </script>
        </head>
        <body>
        <h1> This is an HTML page </h1>
        <p id="demo">A paragraph</p>
        <button type="button" onclick="myFunction()">Try</button>
        </body>
        </html>
        ]
        HTM_NoName1 = s

Conditions for using the ActiveX mode

Caution: To use an HTML Display control:
  • WINDEV in a WINDEV application, Internet Explorer version 4 or later (version 11 recommended) must be installed on the development computer and on the deployment computer. WINDEV's HTML Display control is in Internet Explorer 7 mode.
    To display WEBDEV pages in this control, those pages pages must be generated in HTML + Edge mode.
  • AndroidiPhone/iPadUniversal Windows 10 App in an application in simulator mode, Internet Explorer 4 or later (version 11 recommended) must be installed on the development computer.
  • Versions 21 and later
    iPhone/iPad in an iOS 9.0 application (and later), you must respect the security options. By default, the HTML Display control can only access sites that use an HTTPS connection in compliance with Apple's guidelines. To access other sites (HTTP for example), you must either provide the list of corresponding domains, or disable the security for all the domains. These operations are performed in the iOS application creation wizard. See Generating an iOS application for more details.
    New in version 21
    iPhone/iPad in an iOS 9.0 application (and later), you must respect the security options. By default, the HTML Display control can only access sites that use an HTTPS connection in compliance with Apple's guidelines. To access other sites (HTTP for example), you must either provide the list of corresponding domains, or disable the security for all the domains. These operations are performed in the iOS application creation wizard. See Generating an iOS application for more details.
    iPhone/iPad in an iOS 9.0 application (and later), you must respect the security options. By default, the HTML Display control can only access sites that use an HTTPS connection in compliance with Apple's guidelines. To access other sites (HTTP for example), you must either provide the list of corresponding domains, or disable the security for all the domains. These operations are performed in the iOS application creation wizard. See Generating an iOS application for more details.
Versions 23 and later
iPhone/iPad

Managing local images

When switching to version 23, local images in an HTML control may no longer be displayed. Indeed, for security reasons, loading local images located in the "Documents" directory is not allowed. It is recommended to use fTempDir rather than fResourceDir.
New in version 23
iPhone/iPad

Managing local images

When switching to version 23, local images in an HTML control may no longer be displayed. Indeed, for security reasons, loading local images located in the "Documents" directory is not allowed. It is recommended to use fTempDir rather than fResourceDir.
iPhone/iPad

Managing local images

When switching to version 23, local images in an HTML control may no longer be displayed. Indeed, for security reasons, loading local images located in the "Documents" directory is not allowed. It is recommended to use fTempDir rather than fResourceDir.
AndroidiPhone/iPad

"Enable zoom" ("UI" tab in the control description window)

The "Enable zoom" option:
  • allows the user to pinch zoom.
  • Android displays the zoom buttons.
Android To play HTML 5 videos in an HTML Display control:
  1. Check "Allow execution of scripts" ("General" tab in the control description window).
  2. Enable the device acceleration on the window. To do so, you must edit the manifest of the application.
    • In the generation wizard, go to the "Configuration" step.
    • Click "Advanced configuration".
    • Click "Edit the manifest".
    • Expand the "application" node.
    • Select the "activity" node corresponding to the window containing the HTML control.
    • Add an attribute to this node while specifying "android:hardwareAccelerated" as name and "true" as value.
    • Validate the modifications
    • Finish the wizard.
WINDEV

Incompatibility between the IE ActiveX (and oAuth2) and the use of .NET assembly

When an HTML control is used in WINDEV, this control is using the system "Microsoft Web browser" ActiveX. This ActiveX is also used by WINDEV for all OAuth2 authentications (Facebook, Twitter, Google, etc.) that require a validation for the connection via HTML code.
If an HTML control (or an OAuth2 authentication) and a ".Net"assembly are used in the same project, an incompatibility may occur between the .NET layers of Microsoft and the ActiveX.
An API can be used to manage this cohabitation. To do so, the following code line must be used in the initialization code of the project or in the initialization code of classes or global procedure if the ".Net" object is initialized in the class or in the set of procedures:
// Used to manage the cohabitation between IE ActiveX and .NET
API("OLE32", "CoInitializeEx", Null, 2)
WEBDEV - Server codePHP
Page control: Characteristics

Description window

You can directly enter the HTML source code in the "General" tab of the control description window ("Edit HTML source code...").
WINDEVWEBDEV - Server codeWindows
Report control: Characteristics
Versions 18 and later

Description window and programming

The HTML control is an HTML Static control. You can enter text directly in the "General" tab of the control description window.. This text will be automatically converted to HTML.
The HTML control is used to display:
  • the content of a local HTML file.
  • the HTML content of an item.
To initialize the HTML control by programming, it can be assigned with:
  • an HTML code directly. For example:
    HTM_Code = "'''Hello'''"
  • the path of a local HTML file.
    HTM_Code = fExeDir() + "\MyHTMLFile.htm"
Remarks:
  • PNG and SVG images in the HTML content are not supported.
  • If the CSS style sheet corresponds to an external file, it is ignored.
  • All the external files that must be found on Internet are ignored.
  • JavaScript codes are not run.
New in version 18

Description window and programming

The HTML control is an HTML Static control. You can enter text directly in the "General" tab of the control description window.. This text will be automatically converted to HTML.
The HTML control is used to display:
  • the content of a local HTML file.
  • the HTML content of an item.
To initialize the HTML control by programming, it can be assigned with:
  • an HTML code directly. For example:
    HTM_Code = "'''Hello'''"
  • the path of a local HTML file.
    HTM_Code = fExeDir() + "\MyHTMLFile.htm"
Remarks:
  • PNG and SVG images in the HTML content are not supported.
  • If the CSS style sheet corresponds to an external file, it is ignored.
  • All the external files that must be found on Internet are ignored.
  • JavaScript codes are not run.

Description window and programming

The HTML control is an HTML Static control. You can enter text directly in the "General" tab of the control description window.. This text will be automatically converted to HTML.
The HTML control is used to display:
  • the content of a local HTML file.
  • the HTML content of an item.
To initialize the HTML control by programming, it can be assigned with:
  • an HTML code directly. For example:
    HTM_Code = "'''Hello'''"
  • the path of a local HTML file.
    HTM_Code = fExeDir() + "\MyHTMLFile.htm"
Remarks:
  • PNG and SVG images in the HTML content are not supported.
  • If the CSS style sheet corresponds to an external file, it is ignored.
  • All the external files that must be found on Internet are ignored.
  • JavaScript codes are not run.
Related Examples:
The HTML control Unit examples (WINDEV): The HTML control
[ + ] Using an HTML control
HTMLClass property Unit examples (WEBDEV): HTMLClass property
[ + ] The property ..HTMLClass allows you to read and update the control's HTML attribute "class".
This property lets you select the CSS Style applied on the control.
WM HTML Dialog Cross-platform examples (WINDEV Mobile): WM HTML Dialog
[ + ] This example explains how to dialog with an HTML control.
It is using the WLanguage "ExecuteJS" function and the Javascript "WL.Execute" function.
Minimum version required
  • Version 9
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