C++ Paint函数代码示例

    LRESULT WndProc(UINT nmsg, WPARAM wparam, LPARAM lparam)
    {
        switch(nmsg) {
          case WM_PAINT:
            Paint();
            break;

          default:
            return super::WndProc(nmsg, wparam, lparam);
        }

        return 0;
    }

QPixmap CCJKShapeRect::Image( const QSize &size )
{
	QPixmap pixmap(size);
	pixmap.fill(Qt::transparent);
// 	pixmap.fill(Qt::white);
	QPainter painter(&pixmap);
	painter.setPen(QPen(Qt::black, 8));
	int width = qMax(10, size.width()-10);
	int height = qMax(10, size.height()-10);
	QRectF rect(5, 5, width, height);
	SetRect(rect);
	Paint(&painter);
	return pixmap;
}

void EditView::GenerateLarge()
{
  if ( m_pcSmallBitmap == NULL ) {
    return;
  }

  delete m_pcLargeBitmap;
  m_pcLargeBitmap = new Bitmap( 32, 32, CS_RGB32, Bitmap::SHARE_FRAMEBUFFER );
  
  Scale( m_pcSmallBitmap, m_pcLargeBitmap, m_nFilterType, 0.0f );
//  m_pcLargeIconView->SetBitmap( m_pcLargeBitmap );
  Paint( GetBounds() );
  Flush();
}

void RichText::Paint(Draw& w, int x, int y, int cx, const PaintInfo& pinit) const
{
	Mutex::Lock __(mutex);
	SimplePageDraw pw(w);
	PaintInfo pi(pinit);
	pi.top = PageY(0, 0);
	pi.bottom = PageY(0, INT_MAX);
	pi.usecache = true;
	pi.sizetracking = false;
	pi.highlight = Null;
	w.Offset(x, y);
	Paint(pw, Size(cx / pi.zoom, INT_MAX), pi);
	w.End();
}

void Pane::TunnelPaint(Surface* psurface, bool bPaintAll)
{
    if (m_pparent != NULL && !m_bOpaque) {
        psurface->Offset(-m_offset);
        m_pparent->TunnelPaint(psurface, false);    
        psurface->Offset(m_offset);
    }

    if (bPaintAll) {
        PaintAll(psurface);
    } else {
        Paint(psurface);
    }
}

void MyFrame1::OnLeftUp(wxMouseEvent &event)
{
  //if (event.Moving())
  {
    wxCoord x, y;
    event.GetPosition(&x, &y);
    m_v2.x = (float)x;
    m_v2.y = (float)(m_panel1->GetSize().y - y);
    m_curPrimitive->AddVertex(m_v2);
    Controller::Get().AddPrimitive(m_curPrimitive);
    m_curPrimitive = NULL;
    Paint();
  }
}

void
SWindow::WmPaint(Org_Mes* OrgMes)
{
	if(OrgMes->ExecMessage/* && (ControlMode == ControlMode_Normal)*/) {
		PAINTSTRUCT	ps;
		HDC		hdc = BeginPaint(&ps);

		Paint(hdc);

		EndPaint(&ps);
	}

	DefaultProc(OrgMes);
}

/// @brief Callback for the color picker dialog
/// @param col New color
void ColourButton::SetColour(agi::Color col) {
	colour = col;

	// Draw colour
	Paint();
	SetBitmapLabel(bmp);

	// Trigger a click event on this as some stuff relies on that to know
	// when the color has changed
	wxCommandEvent evt(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
	evt.SetClientData(this);
	evt.SetEventObject(this);
	AddPendingEvent(evt);
}

void
gfxContext::FillWithOpacity(gfxFloat aOpacity)
{
  // This method exists in the hope that one day cairo gets a direct
  // API for this, and then we would change this method to use that
  // API instead.
  if (aOpacity != 1.0) {
    gfxContextAutoSaveRestore saveRestore(this);
    Clip();
    Paint(aOpacity);
  } else {
    Fill();
  }
}

/**
 * Load from file, and set the associated document file name
 *
 * @param file the file name
 * @param a ReturnExt
 */
ReturnExt EditorWindow::LoadFromFile(const char* file)
{
	ReturnExt r = editor->LoadFromFile(file);
	if (!r) return r;

	char* s = strdup(file);
	char* b = basename(s);
	SetTitle(b);
	free(s);

	Paint();
	
	return ReturnExt(true);
}

//Cleans up the heap by adding free blocks to the freelist and changing header colors
void sweepPhase() {
  printf("sweeping ...\n");
  word* heapPtr = heap;
  //Go through the heap as long as the heap pointer is less than afterheap, which is a pointer to the last element in the heap
  while(heapPtr < afterHeap){
    int length = Length(heapPtr[0]);
    int len;
    switch(Color(heapPtr[0])){
      case Black: //If the header is black
        heapPtr[0] = Paint(heapPtr[0], White);
        break;
      case White: //If the header is white
        len = 0;
        /* Sums up the length of the adjacent free blocks */
        while((heapPtr+len) < afterHeap && Color(heapPtr[len])==White){
          len+=Length(heapPtr[len]) + 1; //Adds the length of the current block
        }
        //Make new header if any adjacent free blocks or else paint the existing header blue
        if(len>length){
          heapPtr[0] = mkheader(0, len-1, Blue);
        }else{
          heapPtr[0] = Paint(heapPtr[0],Blue);
        }
        //Set first element in the free block to point to freelist
        //and set freelist to point to the header of the free block
        heapPtr[1] = (word)freelist;
        freelist = &heapPtr[0];
        break;
    }
    //Set heap pointer to next block
    if(len>length){
      heapPtr += len;
    }else{
      heapPtr += length+1;
    }
  }
}

/*
	Load()

	Carica l'immagine dal file nel controllo, creando l'oggetto immagine con la libreria specificata.
*/
BOOL CDibCtrl::Load(LPCSTR lpszFileName,LPCSTR lpcszLibraryName,BOOL bRebuildPalette/*=TRUE*/,BOOL bClearBeforeDraw/*=TRUE*/)
{
	CWaitCursor cursor;
	m_bValidDib = FALSE;

	// controlla che sia un file
	if(!(::GetFileAttributes(lpszFileName) & FILE_ATTRIBUTE_DIRECTORY))
	{
		// verifica se e' stata specificata una libreria differente
		if(m_szLibraryName[0]=='\0')
			strcpyn(m_szLibraryName,lpcszLibraryName,sizeof(m_szLibraryName));
		if(stricmp(m_szLibraryName,lpcszLibraryName)!=0)
		{
			m_ImageFactory.Delete();
			m_pImage = NULL;
			strcpyn(m_szLibraryName,lpcszLibraryName,sizeof(m_szLibraryName));
		}

		// crea l'oggetto immagine
		if(!m_pImage)
			m_pImage = m_ImageFactory.Create(m_szLibraryName,sizeof(m_szLibraryName));
		
		// carica l'immagine nel controllo
		if(m_pImage)
		{
			if(m_pImage->IsSupportedFormat(lpszFileName))
				if(m_pImage->Load(lpszFileName))
				{
					m_bValidDib = TRUE;

					// usa lo stesso oggetto per ogni immagine, per cui occhio con il parametro per ricalcolare la paletta
					m_ImageDraw.SetImage(m_pImage);
					
					if(bRebuildPalette)
					{
						m_ImageDraw.BuildLogPalette();
						RealizePalette(FALSE);
					}

					Paint(bClearBeforeDraw);
				}
		}
	}

	if(!m_bValidDib)
		Clear();

	return(m_bValidDib);
}

static WM_RESULT _TERMINAL_Callback (/*const*/ WM_MESSAGE*pMsg) {
  TERMINAL_Handle hObj = pMsg->hWin;
  TERMINAL_Obj* pObj = TERMINAL_H2P(hObj);
  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_DEBUG_LOG("BUTTON: _Callback(WM_PAINT)\n");
    Paint(pObj/*, (GUI_RECT*)pMsg->Data.p*/);
    return;
  case WM_DELETE:
    GUI_DEBUG_LOG("EDIT: _Callback(WM_DELETE)\n");
    Delete(pObj);
    break;       /* No return here ... WM_DefaultProc needs to be called */
  }
  WM_DefaultProc(pMsg);
}

void mitk::GLMapper::MitkRender(mitk::BaseRenderer* renderer, mitk::VtkPropRenderer::RenderType  type )
{
  bool visible = true;

  GetDataNode()->GetVisibility(visible, renderer, "visible");

  if(!visible)
    return;

  // the if-condition ensures that Paint(renderer) is only called once, otherwise it will be called four times
  // it does not mean that OpenGL renders only an opaque scene
  if(type == mitk::VtkPropRenderer::Opaque)
    Paint(renderer);

}

void ZRadar::animate(Frame *space)
{
	STACKTRACE;

	//If the radar is disabled, don't do anything.
	if (active==FALSE) return;

	//Tell the frame to redraw this space
	space->add_box(0,0,Blank->w,Blank->h);

	//Copy the blank slate onto the temporary bitmap Painted
	if (Blank) blit(Blank, Painted, 0,0,0,0,Blank->w, Blank->h);
	else clear_bitmap(Painted);

	if (t!=NULL) {
		SpaceLocation *l = t->get_focus();
		Paint(Painted,l->pos);
		if (!t->exists()) t=NULL;
	}
	else        Paint(Painted, game->size/2.);

	//Copy Painted onto space->frame, which will then paint it on the screen.
	blit(Painted,space->surface,0,0,0,0,Blank->w,Blank->h);
}