QHTM API Reference and User Guide

For a quick introduction of how to use QHTM see the quick start page.

To make use of QHTM in programming languages other than C/C++ you will need to know how to create a window from a window class name, and how to send messages to a window and how to call a "C" function in a DLL.

Click here to read some information and to download samples of QHTM from within other programming languages
Click here to read about the HTML tags support

How to

Use QHTM as a simple hyperlink control: A step-by-step guide for using QHTM as a simple hyperlink control on a dialog.
Giving HTML to QHTM: A discussion of the various methods of actually displaying HTML including how QHTM locates images.
Add borders: Add borders to a QHTM control
Printing: Print using standard API printing mechanisms
Hyperlinks: A method of handling hyperlinks within your applications
Linking with the library: Describes issues regarding linking to QHTM
Using QHTM with VC5: Making a link library for use within VC5
Catch hyperlinks: Catch hyperlinks and run your own code for them

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Function Reference

QHTM_Initialize: Initialise the library
QHTM_EnableCooltips: Enable and disable tooltips within an application
QHTM_SetResources: Set the resource used for the 'hand' pointer and the 'no image' bitmap
QHTM_PrintCreateContext: Create a print context specifying a zoom level
QHTM_PrintDestroyContext: Destroy a print context
QHTM_PrintSetText: Set the print context text using some in memory text block
QHTM_PrintSetTextFile: Set the print context text using a file
QHTM_PrintSetTextResource: Set the print context text using a resource
QHTM_PrintLayout: Layout the HTML and determine the number of pages required
QHTM_PrintPage: Print an entire page
QHTM_PrintGetHTMLHeight: Measure some in memory text prior to printing
QHTM_PrintSetImageCallback: Set the image callback for a print context
QHTM_MessageBox: A drop in replacement for the MessageBox API, except we display HTML for the text!
QHTM_SetHTMLButton: Change a standard push button to allow it to contain HTML with a single function call.
QHTM_SetHTMLListbox: Change a standard listbox control to allow it to contain HTML with a single function call.
QHTM_GetHTMLHeight: Measure the height of HTML given a constraining width.
QHTM_RenderHTML: Render HTML onto a device context.
QHTM_RenderHTMLRect: Render HTML onto a device context and confined within a rectangle.

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QHTM Types

funcQHTMImageCallback: Pointer to function to supply images to QHTM
funcQHTMBitmapCallback: Pointer to function to supply HBITMAP's to QHTM
funcQHTMResourceCallback: Pointer to function to supply any resource to QHTM. When QHTM needs a HTML file, image, or any other file it will call this callback.
funcQHTMFORMCallback: Pointer to function to receive form POST information. When the user submits a form QHTM gathers the form data and sends it to this callback.
struct QHTMFORMSubmit: Structure that QHTM uses to send for POST data to your application.
class CQHTMImageABC: Image callback abstract base class class
struct QHTM_LINK_INFO: Structure used when asking QHTM for hyperlink information

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Message Reference

A list of the messages that can be sent to QHTM and what they mean. All of the messages have message cracker APIs too.

QHTM_LOAD_FROM_RESOURCE: Load some HTML from resources into a QHTM window
QHTM_LOAD_FROM_FILE: Load some HTML from a file into a QHTM window
QHTM_SET_OPTION: Set one of the QHTM options
QHTM_GET_OPTION: Get one of the QHTM options
QHTM_GOTO_LINK: Force QHTM to scroll to a given named link target within the current document
QHTM_GET_SCROLL_POS: Get the current scroll position within the current document
QHTM_SET_SCROLL_POS: Set the current scroll position within the current document
QHTM_GET_HTML_TITLE_LENGTH: Get the length of the title of the current document
QHTM_GET_HTML_TITLE: Get the title of the current document
QHTM_GET_DRAWN_SIZE: Get the drawn size of thw HTML within QHTM window
QHTM_ADD_HTML: Add HTML to the current QHTM document.
QHTM_GET_LINK_FROM_POINT: Get hyperlink information from a point.

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