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53 lines
1.7 KiB
Plaintext
53 lines
1.7 KiB
Plaintext
{{QBDLDATE:07-31-2022}}
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{{QBDLTIME:23:41:39}}
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The [[CSRLIN]] function returns the current text row position of the [[PRINT]] cursor.
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{{PageSyntax}}
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: {{Parameter|row%}} = [[CSRLIN]]
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{{PageDescription}}
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* The value returned is within the range of 1 to the current number of rows in the [[SCREEN]] mode used.
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** In [[SCREEN]] 0 (text mode), the [[_HEIGHT]] function returns the number of text rows.
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** In graphic modes, the number of available text rows can be calculated by dividing [[_HEIGHT]] (measured in pixels in graphic modes) by [[_FONTHEIGHT]]: '''''totalRows%'' = _HEIGHT / _FONTHEIGHT'''
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* In screen modes that support page flipping, the [[CSRLIN]] function returns the vertical coordinate of the cursor on the active page.
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* x = [[POS]](0) returns the column location of the cursor.
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{{PageExamples}}
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''Example:'' A semicolon stops the print cursor immediately after the print.
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{{CodeStart}}
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LOCATE 5, 5: PRINT "HELLO ";
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Y = {{Cl|CSRLIN}} 'save the row
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X = {{Cl|POS}}(0) 'save the column
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LOCATE 10, 10: PRINT "WORLD"
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LOCATE Y, X 'restore saved position
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PRINT "GOODBYE"
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{{CodeEnd}}
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{{OutputStart}}
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HELLO GOODBYE
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WORLD
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{{OutputEnd}}
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:''Explanation:'' "HELLO " is printed and the semicolon stops the cursor immediately after the text. The [[CSRLIN]] variable records the current print cursor's text row in Y. The [[POS]] function records the current print cursor's text column in X. The second [[PRINT]] statement displays the comment "WORLD" on the 10th line of the screen. The last [[LOCATE]] statement restores the position of the cursor to the original line and column immediately after the first print.
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{{PageSeeAlso}}
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* [[SCREEN]], [[LOCATE]], [[POS]]
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* [[_PRINTSTRING]] (graphic print)
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{{PageNavigation}}
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