ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Declaring the functions of the Windows API
Syntax for declaring the functions of the Windows API
Instance (Function)
Returns the "system handle" (HINSTANCE) of the current program.
Value of constants for the Windows 32-bit API
Value of constants for the Windows 32-bit API
CallDLL32 (Function)
Runs a function found in an external DLL.
API (Function)
Runs a function found in an external DLL.
CoordinateScreenToEditor (Function)
Converts a size or a position specified in the native dpi of the screen on the device where the application is run to the reference dpi in the editor (160 dpi).
OpenChild (Example)
Usage example of the OpenChild function
fReadLineRegularExpression (Function)
Reads a line in an external file, gets sections of this line according to a regular expression and assigns them to a variable.
Cos (Function)
Calculates the cosine of an angle.
CoTan (Function)
Calculates the cotangent of an angle.
Root (Function)
Returns the root of a number.
Sin (Function)
Returns the sine of an angle.
Tangent (Function)
Calculates the tangent of an angle.
BrowserRunApp (Function)
Opens the default Web browser of the current device.
ArcCos (Function)
Returns the arc cosine of a numeric value (integer or real).
ArcSin (Function)
Returns the arc sine of a numeric value (integer or real).
Exp (Function)
Calculates the exponential of a numeric value (reverse of Napierian logarithm).
Ln (Function)
Calculates the Napierian logarithm (reverse of exponential) of a numeric value.
Log (Function)
Calculates the decimal logarithm of a numeric value.
Max (Function)
Returns the greatest value passed as parameter.
fSeparator (Function)
Returns a file path with normalized separators.
fSep (Function)
Returns the separator of directory according to the current platform ('\' or '/')....
fListResource (Function)
Lists the resources integrated to the application.
Modulo (Reserved word)
Returns the remainder of a division.
IsOdd (Function)
Identifies an odd number.
IsEven (Function)
Identifies an even number.
ColorHue (Function)
Calculates the hue of a color.
ColorSaturation (Function)
Calculates the saturation of a color.
ColorLightness (Function)
Calculates the lightness of a color.
BurnerStatus (Function)
Returns the status of the current burner.