silverlight在wince上的应用

这两天使用silverlight编写一个在wince 7.0上运行的photoview小工具，中间遇到许多问题，现在记录下来，方便以后查找。

 

 

HWND hWnd;

IXRBitmapImagePtr image_background;

IXRImagePtr image_control;

IXRImagePtr pFull_image;

IXRScaleTransformPtr pImageScale;

IXRRotateTransformPtr pImageRotate;

IXRScrollViewerPtr pScroll;

IXRCanvasPtr pFull;

float fWidth,fheight;

HWND hWndTaskBar    = NULL;    // The TaskBar

BOOL mode = false;   

 

 

图片放大/缩小：

 

HRESULT OnBSClicked(IXRDependencyObject* source,XRMouseButtonEventArgs* args)

{

HRESULT retcode;

BSTR pName;

 

float fActualX,fActualY;

static float x = 1.0;

static float y = 1.0;

if(Failed(retcode = source->GetName(&pName)))

return retcode;

 

if(!wcscmp(pName,L"btn_small"))

{

if(x > 0.5)

x -= 0.1;

if(y > 0.5)

y -= 0.1;

}

else

{

x += 0.1;

y += 0.1;

}

//image_control->GetActualX(&fActualX);

//image_control->GetActualY(&fActualY);

 

//pImageScale->SetCenterX(fActualX + fWidth/2);

//pImageScale->SetCenterY(fActualY + fheight/2);

pImageScale->SetScaleX(x);

pImageScale->SetScaleY(y);

 

if( 1.0 < x )

{

pScroll->SetVerticalScrollBarVisibility(XRScrollBarVisibility_Visible);

pScroll->SetHorizontalScrollBarVisibility(XRScrollBarVisibility_Visible);

}

else

{

pScroll->SetVerticalScrollBarVisibility(XRScrollBarVisibility_Hidden);

pScroll->SetHorizontalScrollBarVisibility(XRScrollBarVisibility_Hidden);

}

image_control->SetWidth(x * fWidth);

image_control->SetHeight(y * fheight);

image_control->SetRenderTransform(pImageScale);

image_control->SetStretch(XRStretch_UniformToFill);

 

return S_OK;

}

 

图片翻转：

 

HRESULT OnRotateClicked(IXRDependencyObject* source,XRMouseButtonEventArgs* args)

{

HRESULT retcode;

BSTR pName;

 

static float angle = 0;

 

//float centerX = fWidth/2;

//float centerY = fheight/2;

float centerX = 0.5;

float centerY = 0.5;

if(Failed(retcode = source->GetName(&pName)))

return retcode;

if(!wcscmp(pName,L"btn_forward"))

{

angle += 90;

}

else

angle -= 90;

 

pImageRotate->SetAngle(angle);

pImageRotate->SetCenterX(centerX);

pImageRotate->SetCenterY(centerY);

 

image_control->SetRenderTransform(pImageRotate);

 

return S_OK;

 

}

 

删除图片：

 

HRESULT OnDelClicked(IXRDependencyObject* source,XRMouseButtonEventArgs* args)

{

if(IDOK == MessageBox(hWnd,L"Are you sure to delete the picture?",L"PhotoView",MB_OKCANCEL))

DeleteFile(ImageArry[i]);

 

return S_OK;

}

 

 

图片全屏：

 

HRESULT OnPlayClicked(IXRDependencyObject* source,XRMouseButtonEventArgs* args)

{

 

if (mode)

{

if(hWndTaskBar != NULL)        

ShowWindow(hWndTaskBar,SW_SHOW);

pScroll->Setopacity(100);

pScroll->SetVisibility(XRVisibility_Visible);

pFull->SetVisibility(XRVisibility_Collapsed);

::SetwindowPos(hWnd,/*HWND_TOPMOST*/HWND_NOTOPMOST,50,640,480,SWP_NOOWNERZORDER|SWP_SHOWWINDOW);

mode = false;

}

else

{

if (hWndTaskBar != NULL)    ShowWindow(hWndTaskBar,SW_HIDE);

 

int iFullWidth = GetSystemMetrics(SM_CXSCREEN); 

int iFullHeight = GetSystemMetrics(SM_CYSCREEN); 

pImageScale->SetScaleX(1.0);

pImageScale->SetScaleY(1.0);

pScroll->Setopacity(0);

pScroll->SetVisibility(XRVisibility_Collapsed);

pFull->SetRenderTransform(pImageScale);

pFull->Setopacity(100);

pFull->SetVisibility(XRVisibility_Visible);

::SetwindowPos(hWnd,HWND_TOPMOST/*HWND_NOTOPMOST*/,iFullWidth,iFullHeight,SWP_NOOWNERZORDER|SWP_SHOWWINDOW);

//pScroll->UpdateLayout();

mode = true;

}

return S_OK;

}