Group Video Functions

Determines the number of pixel rows used to display characters.

CharPix() --> nPixelRows

Replaces characters on the screen.

CharWin( [<nTop>], ; // Type: N Default: 0 [<nLeft>], ; // Type: N Default: 0 [<nBottom>], ; // Type: N Default: MaxRow() [<nRight>], ; // Type: N Default: MaxCol() [<cNewChar|nNewChar>], ; // Type: CN Default: GetClearB() [<cOldChar|nOldChar>] ; // Type: CN ) --> cNullString

Clears a row on the screen beginning at a specified position.

ClearEol( [<nRow>], ; // Type: N Default: Row() [<nColumn>], ; // Type: N Default: Col() [<cColorAttr|nColorAttr>], ; // Type: CN Default: GetClearA() [<cClearChar|nClearChar>] ; // Type: CN Default: GetClearB() ) --> cNullString

Clears the screen with delay (imploding effect).

ClearSlow( <nMilliSecondsDelay>, ; // Type: N [<nTop>], ; // Type: N Default: 0 [<nLeft>], ; // Type: N Default: 0 [<nBottom>], ; // Type: N Default: MaxRow() [<nRight>], ; // Type: N Default: MaxCol() [<cClearChar|nClearChar>] ; // Type: CN Default: GetClearB() ) --> cNullString

Clears (part of) the screen.

ClearWin( [<nTop>], ; // Type: N Default: 0 [<nLeft>], ; // Type: N Default: 0 [<nBottom>], ; // Type: N Default: MaxRow() [<nRight>], ; // Type: N Default: MaxCol() [<cColorAttr|nColorAttr>], ; // Type: CN Default: GetClearA() [<cClearChar|nClearChar>] ; // Type: CN Default: GetClearB() ) --> cNullString

Clears a row on the screen in black beginning at a specified position.

ClEol( [<nRow>], ; // Default: Row() [<nColumn>] ; // Default: Col() ) --> cNullString

Clears (part of) the screen in black.

ClWin( [<nTop>], ; // Default: Row() [<nLeft>], ; // Default: Col() [<nBottom>], ; // Default: MaxRow() [<nRight>] ; // Default: MaxCol() ) --> cNullString

Replaces color attributes.

ColorRepl( [<cNewAttr|nNewAttr>], ; // Type: CN Default: GetClearA() [<cOldAttr|nOldAttr>] ; // Type: CN ) --> cNullString

Converts a color string to a numeric color attribute.

ColorToN( <cAttribute> ) --> nAttribute

Replaces a color attribute in a specified area on the screen.

ColorWin( [<nTop>], ; // Type: N Default: 0 [<nLeft>], ; // Type: N Default: 0 [<nBottom>], ; // Type: N Default: MaxRow() [<nRight>], ; // Type: N Default: MaxCol() [<cNewAttr|nNewAttr>], ; // Type: CN Default: GetClearA() [<cOldAttr|nOldAttr>] ; // Type: CN ) --> cNullString

Function EgaPalette() is not supported.

Selects the enhanced color (2nd color) of SetColor().

Enhanced() --> cNullString

Reads the contents of a screen from a file.

FileScreen( <cFileName>, [<nOffSet>] ; // Default: 0 ) --> nBytesRead

Loads EGA or VGA fonts from a file.

FontLoad( <cFileName>, ; // Type: C [<nFontArea>], ; // Type: N Default: 1 [<nCharOffSet|lChangePixelHeight>], ; // Type: NL Default: 0 [<nNumberOfChars>] ; // Type: N Default: 256 ) --> nErrorCode

Discards all loaded fonts and resets the font to system default.

FontReset() --> lReset

Mirrors or rotates characters of a font.

FontRotate( <cFontString>, <nDirection>, [<nPixelHeight>], ; // Default: CharPix() [<nStart>] ; // Default: 0 ) --> cNewFontString

Function FontSelect() is not supported.

Retrieves the default color attribute for clearing the screen.

GetClearA() --> nClearAttribute

Retrieves the default character attribute for clearing the screen.

GetClearB() --> nClearCharacter

Copies the current font into a string.

GetFont( [<nFont>] ; // Default: 1 ) --> cFontString

Retrieves the screen string for hidden screen output.

GetScrStr() --> cHiddenScreen

Function GetVgaPal() is not supported.

Inverts the foreground and the background color of a color attribute.

InvertAttr( <cColorAttr|nColorAttr> ; // Type: CN ) --> nInvertedAttribute

Inverts the foreground and the background color on the screen.

InvertWin( [<nTop>], ; // Default: 0 [<nLeft>], ; // Default: 0 [<nBottom>], ; // Default: MaxRow() [<nRight>] ; // Default: MaxCol() ) --> cNullString

Checks whether a CGA graphics card can be emulated.

IsCga() --> lCGA_Exists

Checks whether an EGA graphics card can be emulated.

IsEGA() --> lEGA_Exists

Checks whether a Hercules graphics card can be emulated.

IsHercules() --> lHercules_Exists

Checks whether a MCGA graphics card can be emulated.

IsMCGA() --> lMCGA_Exists

Checks whether a Monochrome graphics card can be emulated.

IsMono() --> lMonochrome_Exists

Checks whether a PGA graphics card can be emulated.

IsPGA() --> lPGA_Exists

Checks whether a VGA graphics card is installed.

IsVGA() --> lVGA_IsInstalled

Determines the maximum number of font areas.

MaxFont() --> 1

Function MoniSwitch() is not supported.

Converts a numeric color attribute to a string.

NtoColor( <nColorAttribute>, [<lColorsAsChars>] ; // Default: .F. ) --> cAttribute

Retrieves the maximum number of useable screen columns

NumCol() --> nMaxCol

Determines the number of available colors

NumColors() --> nColorCount

Restores position and shape of the screen cursor.

RestCursor( <nSavedCursor> ) --> cNullString

Saves the current cursor position and shape.

SaveCursor() --> nSavedCursor

Outputs a string vertically downwards.

SayDown( <cString>, [<nMilliSecondsDelay>], ; // Default: 4 [<nRow>], ; // Default: Row() [<nColumn>] ; // Default: Col() ) --> cNullString

Outputs a string on the screen using a "move in" effect.

SayMoveIn( <cString>, [<nMilliSecondsDelay>], ; // Default: 4 [<nRow>], ; // Default: Row() [<nColumn>], ; // Default: Col() [<lFromRight>] ; // Default: .F. ) --> cNullString

Displays a string on screen without changing existing color attributes.

SayScreen( <cString>, [<nRow>], ; // Default: Row() [<nColumn>] ; // Default: Col() ) --> cNullString

Outputs a string on the screen using a "spread" effect.

SaySpread( <cString>, [<nMilliSecondsDelay>], ; // Default: 4 [<nRow>], ; // Default: Row() [<nColumn>] ; // Default: Col() ) --> cNullString

Determines the color attribute at a specified position on the screen.

ScreenAttr( [<nRow>], ; // Default: Row() [<nColumn>] ; // Default: Col() ) --> nColorAttribute

Writes the current contents of the screen to a file.

ScreenFile( <cFileName>, [<lAppendToFile>], ; // Default: .F. [<nWriteOffSet>], ; // Default: FileSize [<lTruncateFile>] ; // Default: .F. ) --> nBytesWritten

Searches strings on the screen and marks them with a color attribute.

ScreenMark( <cSearchString>, ; // Type: C <cColorAttr|nColorAttr>, ; // Type: CN <lCaseSensitive>, ; // Type: L [<lAllStringsFound>], ; // Type: L Default: .F. [<cPreDelimiter>], ; // Type: C Default: "" [<cPostDelimiter>] ; // Type: C Default: "" ) --> lFound

Mixes a string of characters with a string of color attributes

ScreenMix( <cString>, <cAttributeString>, [<nRow>], ; // Default: Row() [<nColumn>] ; // Default: Col() ) --> cNullString

Retrieves the size of the available screen

ScreenSize( [<lPhysicalScreen>] ; // Default: .F. ) --> nScreenSize

Retrieves the screen contents beginning at a specified position.

ScreenStr( [<nRow>], ; // Default: Row() [<nColumn>], ; // Default: Col() [<nCharacters>] ) --> cScreenString

Sets the default color attribute for clearing the screen.

SetClearA( [<cClearAttr|nClearAttr>] ; // Type: CN Default: "W/N" ) --> cNullString

Sets the default character attribute for clearing the screen.

SetClearB( [<cClearAttr|nClearAttr>] ; // Type: CN Default: Chr(255) ) --> cNullString

Activates a font that was saved to a string.

SetFont( <cFontString>, [<nFontArea>], ; // Default: 1 [<nCharOffSet|lChangePixelHeight>], ; // Default: 0 [<nNumberOfChars>] ; // Default: 256 ) --> nErrorCode

Sets the current cursor position and updates Row() and Col().

SetRC( [<nRow>], [<nColumn>] ) --> cNullString

Toggles hidden screen output.

SetScrStr( <lHiddenOutput> ) --> lHiddenOutput

Selects the standard color (1st color) of SetColor().

Standard() --> cNullString

Displays a screen string at the specified position.

StrScreen( <cScreenString>, [<nRow>], ; // Default: Row() [<nColumn>] ; // Default: Col() ) --> cNullString

Selects the unselected color (5th color) of SetColor().

UnSelected() --> cNullString

Replaces all characters on the screen except a range of characters.

UntextWin( <nTop>, ; // Type: N <nLeft>, ; // Type: N <nBottom>, ; // Type: N <nRight>, ; // Type: N <cReplace|nReplace>, ; // Type: CN [<cExceptFrom|nExceptFrom>], ; // Type: CN Default: Chr(176) [<cExceptTo|nExceptTo>] ; // Type: CN Default: Chr(223) ) --> cNullString

Function VgaPalette() is not supported.

Resets the video mode.

VideoInit() --> NIL

Queries the video mode at program startup.

VideoSetup() --> nVideoMode

Retrieves information about video adapters.

VideoType() --> nVideoType