Miscellaneous Windows functions

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Standard functions

Windows management functions

Miscellaneous Windows functions

WLanguage procedure

Miscellaneous Windows functions

Related examples

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Miscellaneous Windows functions

The miscellaneous Windows functions are as follows:


API	Runs a function found in an external DLL.
APIConfigure	Modifies the options for calling API and CallDLL32.
New in version 28 BitcoinValidAddress	Checks whether a Bitcoin wallet address is valid.
CallDLL32	Runs a function found in an external DLL.
CallInterface	Runs a method of an interface of an object implemented in a DLL external to the WINDEV framework.
COMCallMethod	Runs a method of an interface of a COM object instantiated by COMCreateInstance.
COMCreateInstance	Instantiates a COM object (Component Object Model).
COMQueryInterface	Calls the QueryInterface method of the specified COM object to get a specific interface of this object so that it can be used with COMCallMethod.
CreateShortcut	Creates a shortcut on the Windows desktop, in the "Start" menu of Windows or in a specific directory.
DeleteShortcut	Deletes a shortcut previously created by CreateShortcut from the Windows desktop, from the "Start" menu of Windows or from a specific directory.
FreeDLL	Frees the 32-bit library (DLL) that was loaded in memory by LoadDLL.
HiWord	Returns the two high bytes of an integer.
New in version 28 IBANValid	Checks the validity of an International Bank Acount Number (IBAN).
IconInstall	Creates an icon (associated with a program) in a group of Windows programs, with the associated command line.
Instance	Returns the "system handle" (HINSTANCE) of the current program.
KeyPressed	Checks which key is pressed.
LoadDLL	Loads the specified library (DLL) in memory.
LoWord	Returns the two low bytes of an integer.
MakeInteger	Builds a 4-byte integer from two 2-byte integers.
OpenSSLCheck	Checks, via a public key, that the signature of data performed with the OpenSSL library is correct.
Ping	Checks whether a network address can be reached by using the ICMP protocol (similar to the PING network utility).
sComputeCrc16	Checks a character string before and after transmission between WINDEV applications and WEBDEVsites.
sComputeCrc32	Calculates the Cyclical Redundancy Check (CRC) of buffer.
SendKey	Simulates the keystrokes and the mouse actions.
Transfer	Copies a block of bytes or a fixed-length string from a memory address into another one.
WindowsVersion	Returns the runtime mode of Windows.

You also have the ability to use the following types of variables:


API description	An API Description variable is used to describe an API, its parameters, its return value and its calling options by programming.

Related Examples:

Unit examples (WINDEV): Strings with APIs

[ + ] Using strings with APIs.
The following functions are used:
- StringRetrieve
- Transfer

Training (WINDEV): WD SystemAPIs

[ + ] This example presents the use of the Windows APIs. Several WLanguage functions are used to perform the following operations:

- Hide the system buttons of an MDI child window
- Enumerate the opened windows
- Retrieve/Modify the time of a double click
- Retrieve the idle time on the computer
- Empty the recycle bin (by using or not an "API descriptor" variable)
- Change the screen background
- Modify the caret (input cursor) of an edit control
- Share a directory
- Delete a share

These functions use the Windows APIs. See the help window for more details.

Training (WINDEV): WD Screen Saver

[ + ] This example illustrates the creation of a screen saver with the WLanguage functions.
The following topics are presented in this example:
1/ the periodic call to a procedure ("timers")
2/ the management of Windows events
3/ the system functions (call to Windows APIs)
To use the screen saver:
- Rename the executable (.EXE) to.SCR
- Copy the file to the directory of Windows (Ex: C:\WINDOWS)
- Open the window for the display properties of the desktop
- Choose the "Screen Saver" tab
- Select the screen saver generated by WINDEV

Training (WINDEV): WD DirectX

[ + ] DirectX is a set of libraries (or APIs) intended for programming multimedia applications.
This example includes an internal component allowing you to use DirectX 9.0 in your WINDEV applications.
All the APIs and interfaces of DirectX 9 have been implemented.