Título: FillRectEx [Source]
Publicado por: LeandroA en 2 Febrero 2009, 01:25 am
Hola estas es una funcion para poder pintar un Hdc con una imagen en forma repetitiva, pero partiendo de otro hdc, creo que no exite un api que directamente haga esto, ya que utilizando CreatePatternBrush lo hace desde un bmp, bueno no se si les pueda servir pero en fin es mucho mas rapido que usar bucles, como veran en el siguiente ejemplo pueden compara la funcion "Pintar" con "FillRectEx" Option Explicit 'Function: FillRectEx 'Autor Leandro Ascierto Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hdc As Long) As Long Private Declare Function CreateCompatibleBitmap Lib "gdi32" (ByVal hdc As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long Private Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long Private Declare Function DeleteDC Lib "gdi32" (ByVal hdc As Long) As Long Private Declare Function DeleteObject Lib "gdi32.dll" (ByVal hObject As Long) As Long Private Declare Function CreatePatternBrush Lib "gdi32.dll" (ByVal hBitmap As Long) As Long Private Declare Function FillRect Lib "user32" (ByVal hdc As Long, lpRect As RECT, ByVal hBrush As Long) As Long Private Declare Function SetRect Lib "user32" (lpRect As RECT, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long Private Declare Function BitBlt Lib "gdi32" (ByVal hDestDC As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long
Private Type RECT Left As Long Top As Long Right As Long Bottom As Long End Type
Private Declare Function GetTickCount& Lib "kernel32" ()
Private Sub Pintar() Dim x As Long Dim y As Long
Do While y < Me.ScaleHeight Do While x < Me.ScaleWidth BitBlt Me.hdc, x, y, Picture1.ScaleWidth, Picture1.ScaleHeight, Picture1.hdc, 0, 0, vbSrcCopy x = x + Picture1.ScaleWidth Loop y = y + Picture1.ScaleHeight x = 0 Loop
End Sub
Private Sub Form_Load() Me.Show DoEvents Me.ScaleMode = vbPixels Picture1.ScaleMode = vbPixels Picture1.AutoRedraw = True Form_Resize End Sub
Private Sub Form_Resize() Dim i As Integer Dim lTime As Long
'lTime = GetTickCount& 'For i = 0 To 100 FillRectEx Me.hdc, 0, 0, Me.ScaleWidth, Me.ScaleHeight, Picture1.hdc, 0, 0, Picture1.ScaleWidth, Picture1.ScaleHeight 'call Pintar 'Next
'Debug.Print GetTickCount& - lTime End Sub
Private Sub FillRectEx(DestDC As Long, DestX As Long, DestY As Long, DestWidth As Long, DestHeight As Long, SrcDC As Long, SrcX As Long, SrcY As Long, SrcWidth As Long, SrcHeight As Long) Dim DC As Long Dim hDCMemory As Long Dim hBmp As Long Dim mBrush As Long Dim Rec As RECT
DC = GetDC(0) hDCMemory = CreateCompatibleDC(0) hBmp = CreateCompatibleBitmap(DC, SrcWidth, SrcHeight) Call SelectObject(hDCMemory, hBmp) BitBlt hDCMemory, 0, 0, SrcWidth, SrcHeight, SrcDC, SrcX, SrcY, vbSrcCopy mBrush = CreatePatternBrush(hBmp) SetRect Rec, DestX, DestY, DestWidth + DestX, DestHeight + DestY FillRect DestDC, Rec, mBrush DeleteObject mBrush DeleteObject hBmp DeleteDC DC DeleteDC hDCMemory End Sub Saludos
Título: Re: FillRectEx [Source]
Publicado por: el_c0c0 en 2 Febrero 2009, 03:28 am
interesante, ideal para volar al carajo el BitBlt con bucles y mandarle esto
saludos
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