Sets the graphics mode for the specified device context.
#Include <WinAPIEx.au3>
_WinAPI_SetGraphicsMode ( $hDC, $iMode )
| $hDC | Handle to the device context. |
| $iMode | The graphics mode. This parameter can be one of the following values. $GM_COMPATIBLE $GM_ADVANCED |
| Success | The previous graphics mode. |
| 失败: | 返回 0 并设置 @error 标志为非 0 值. |
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#Include <APIConstants.au3>
#Include <WinAPIEx.au3>
Opt('MustDeclareVars', 1)
Global Const $STM_SETIMAGE = 0x0172
Global Const $STM_GETIMAGE = 0x0173
Global Const $Pi = 4 * ATan(1)
Global $hForm, $Pic, $hPic, $tRECT, $tXFORM, $hObj, $hBitmap, $hBrush, $hPen, $hDC, $hMemDC, $hMemSv
Global $nM11, $nM12, $nM21, $nM22, $nDx, $nDy, $iXc, $iYc, $nAngle
; 创建 GUI
$hForm = GUICreate('MyGUI', 340, 340)
$Pic = GUICtrlCreatePic('', 0, 0, 320, 320)
$hPic = GUICtrlGetHandle($Pic)
; Create bitmap
$hDC = _WinAPI_GetDC($hPic)
$hMemDC = _WinAPI_CreateCompatibleDC($hDC)
$hBitmap = _WinAPI_CreateCompatibleBitmapEx($hDC, 340, 340, _WinAPI_SwitchColor(_WinAPI_GetSysColor($COLOR_3DFACE)))
$hMemSv = _WinAPI_SelectObject($hMemDC, $hBitmap)
; Set advanced graphics mode to be able to set the world transformation
_WinAPI_SetGraphicsMode($hMemDC, $GM_ADVANCED)
; Create transformation matrix for rotate of 5 degrees
$nAngle = $Pi / 36
$iXc = 170
$iYc = 170
$nM11 = Cos($nAngle)
$nM12 = Sin($nAngle)
$nM21 = -$nM12
$nM22 = $nM11
$nDx = $iXc * (1 - Cos($nAngle)) + $iYc * Sin($nAngle)
$nDy = $iYc * (1 - Cos($nAngle)) - $iXc * Sin($nAngle)
$tXFORM = _WinAPI_CreateTransform($nM11, $nM12, $nM21, $nM22, $nDx, $nDy)
; Draw ellipses with rotation
$hBrush = _WinAPI_SelectObject($hMemDC, _WinAPI_GetStockObject($NULL_BRUSH))
$hPen = _WinAPI_SelectObject($hMemDC, _WinAPI_GetStockObject($DC_PEN))
_WinAPI_SetDCPenColor($hMemDC, 0xDD0000)
$tRECT = _WinAPI_CreateRect($iXc - 150, $iYc - 40, $iXc + 150, $iYc + 40)
For $i = 0 To 350 Step 5
_WinAPI_ModifyWorldTransform($hMemDC, $tXFORM, $MWT_LEFTMULTIPLY)
_WinAPI_Ellipse($hMemDC, $tRECT)
Next
; Release objects
_WinAPI_ReleaseDC($hPic, $hDC)
_WinAPI_SelectObject($hMemDC, $hBrush)
_WinAPI_SelectObject($hMemDC, $hPen)
_WinAPI_SelectObject($hMemDC, $hMemSv)
_WinAPI_DeleteDC($hMemDC)
; Set bitmap to control
_SendMessage($hPic, $STM_SETIMAGE, 0, $hBitmap)
$hObj = _SendMessage($hPic, $STM_GETIMAGE)
If $hObj <> $hBitmap Then
_WinAPI_DeleteObject($hBitmap)
EndIf
GUISetState()
Do
Until GUIGetMsg() = -3