Gets the size (commonly called em size or em height), in design units, of a font family
#include <GDIPlus.au3>
_GDIPlus_FontFamilyGetEmHeight ( $hFontFamily [, $iStyle = 0] )
| $hFontFamily | Pointer to a FontFamily object |
| $iStyle | [optional] The style of the typeface. Can be a combination of the following: 0 - Normal weight or thickness of the typeface 1 - Bold typeface 2 - Italic typeface 4 - Underline 8 - Strikethrough |
| Success: | the size, in design units, of this font family. |
| Failure: | 0 and sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GPIP_ERR* see GPIPlusConstants.au3). |
Search GdipGetEmHeight in MSDN Library.
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
Example()
Func Example()
; Create GUI
Local $hGUI = GUICreate("GDI+", 800, 340)
GUISetState(@SW_SHOW)
_GDIPlus_Startup()
Local $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGUI)
_GDIPlus_GraphicsClear($hGraphic, 0xFFFFFFFF)
Local $hPen = _GDIPlus_PenCreate(0xFF0000FF)
Local $hBrush = _GDIPlus_BrushCreateSolid(0xFFFF0000)
Local $hFormat = _GDIPlus_StringFormatCreate()
Local $hFamily = _GDIPlus_FontFamilyCreate("Arial")
Local $hFont = _GDIPlus_FontCreate($hFamily, 96, 0)
Local $sString = ChrW(0x1EF2) & ChrW(0x1EF3)
Local $iPosX = 50
Local $iPosY = 50
Local $aStrDim = _MeasureString($hGraphic, $sString, $hFont, $hFormat, $hFamily)
_GDIPlus_GraphicsDrawString($hGraphic, "MeasureString", $iPosX, $iPosY - 30)
_GDIPlus_GraphicsDrawLine($hGraphic, $iPosX, $iPosY - 5, $iPosX, $iPosY + 5, $hPen)
_GDIPlus_GraphicsDrawLine($hGraphic, $iPosX - 5, $iPosY, $iPosX + 5, $iPosY, $hPen)
Local $tLayout = _GDIPlus_RectFCreate($iPosX, $iPosY, $aStrDim[4], $aStrDim[5])
_GDIPlus_GraphicsDrawRect($hGraphic, $iPosX, $iPosY, $aStrDim[4], $aStrDim[5], $hPen)
_GDIPlus_GraphicsDrawStringEx($hGraphic, $sString, $hFont, $tLayout, $hFormat, $hBrush)
$iPosX = 300
_GDIPlus_GraphicsDrawString($hGraphic, "MeasureCharacterRanges", $iPosX, $iPosY - 30)
_GDIPlus_GraphicsDrawLine($hGraphic, $iPosX, $iPosY - 5, $iPosX, $iPosY + 5, $hPen)
_GDIPlus_GraphicsDrawLine($hGraphic, $iPosX - 5, $iPosY, $iPosX + 5, $iPosY, $hPen)
_GDIPlus_GraphicsDrawRect($hGraphic, $iPosX + $aStrDim[0], $iPosY + $aStrDim[1], $aStrDim[2], $aStrDim[3], $hPen)
DllStructSetData($tLayout, "X", $iPosX)
_GDIPlus_GraphicsDrawStringEx($hGraphic, $sString, $hFont, $tLayout, $hFormat, $hBrush)
$iPosX = 550
_GDIPlus_GraphicsDrawString($hGraphic, "CellAscent / CellDescent", $iPosX, $iPosY - 30)
_GDIPlus_GraphicsDrawLine($hGraphic, $iPosX, $iPosY - 5, $iPosX, $iPosY + 5, $hPen)
_GDIPlus_GraphicsDrawLine($hGraphic, $iPosX - 5, $iPosY, $iPosX + 5, $iPosY, $hPen)
_GDIPlus_GraphicsDrawRect($hGraphic, $iPosX + $aStrDim[0], $iPosY + $aStrDim[1], $aStrDim[2], $aStrDim[7], $hPen)
_GDIPlus_GraphicsDrawRect($hGraphic, $iPosX + $aStrDim[0], $iPosY + $aStrDim[1] + $aStrDim[7], $aStrDim[2], $aStrDim[8], $hPen)
DllStructSetData($tLayout, "X", $iPosX)
_GDIPlus_GraphicsDrawStringEx($hGraphic, $sString, $hFont, $tLayout, $hFormat, $hBrush)
$sString = "fontsize goes crazy"
$iPosX = 50
$iPosY = 300
Local $sChar
For $i = 0 To StringLen($sString)
$sChar = StringLeft($sString, 1)
$sString = StringTrimLeft($sString, 1)
If $sChar = " " Then
$aStrDim = _MeasureString($hGraphic, "_", $hFont, $hFormat, $hFamily)
$iPosX += $aStrDim[2]
ContinueLoop
EndIf
_GDIPlus_FontDispose($hFont)
$hFont = _GDIPlus_FontCreate($hFamily, Random(12, 48), 0)
$aStrDim = _MeasureString($hGraphic, $sChar, $hFont, $hFormat, $hFamily)
$tLayout = _GDIPlus_RectFCreate($iPosX - $aStrDim[0], $iPosY - $aStrDim[1] - $aStrDim[7], $aStrDim[4], $aStrDim[5])
_GDIPlus_GraphicsDrawStringEx($hGraphic, $sChar, $hFont, $tLayout, $hFormat, $hBrush)
$iPosX += $aStrDim[2]
Next
; Loop until the user exits.
Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE
; Clean up resources
_GDIPlus_FontDispose($hFont)
_GDIPlus_FontFamilyDispose($hFamily)
_GDIPlus_StringFormatDispose($hFormat)
_GDIPlus_BrushDispose($hBrush)
_GDIPlus_PenDispose($hPen)
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_Shutdown()
EndFunc ;==>Example
Func _MeasureString($hGraphics, $sString, $hFont, $hFormat, $hFamily, $iStyle = 0)
Local $tLayout = _GDIPlus_RectFCreate()
Local $aInfo = _GDIPlus_GraphicsMeasureString($hGraphics, $sString, $hFont, $tLayout, $hFormat)
Local $aRanges[2][2] = [[1]]
$aRanges[1][1] = StringLen($sString)
_GDIPlus_StringFormatSetMeasurableCharacterRanges($hFormat, $aRanges)
Local $aRegion = _GDIPlus_GraphicsMeasureCharacterRanges($hGraphics, $sString, $hFont, $aInfo[0], $hFormat)
Local $aBounds = _GDIPlus_RegionGetBounds($aRegion[1], $hGraphics)
_GDIPlus_RegionDispose($aRegion[1])
Local $iFontHeight = _GDIPlus_FontGetHeight($hFont, $hGraphics)
Local $iLineSpacing = _GDIPlus_FontFamilyGetLineSpacing($hFamily, $iStyle)
Local $iAscent = $iFontHeight / $iLineSpacing * _GDIPlus_FontFamilyGetCellAscent($hFamily, $iStyle)
Local $iDescent = $iFontHeight / $iLineSpacing * _GDIPlus_FontFamilyGetCellDescent($hFamily, $iStyle)
Local $aDim[9]
$aDim[0] = $aBounds[0]
$aDim[1] = $aBounds[1]
$aDim[2] = $aBounds[2]
$aDim[3] = $aBounds[3]
$aDim[4] = DllStructGetData($aInfo[0], "Width")
$aDim[5] = DllStructGetData($aInfo[0], "Height")
$aDim[6] = $iFontHeight
$aDim[7] = $iAscent
$aDim[8] = $iDescent
Return $aDim
EndFunc ;==>_MeasureString