【问题标题】:How do I switch an image in "XAML for Windows Embedded (Compact 2013)"如何在“XAML for Windows Embedded (Compact 2013)”中切换图像
【发布时间】:2017-08-25 07:41:24
【问题描述】:
【问题讨论】:
标签:
c++
xaml
silverlight
windows-ce
windows-embedded
【解决方案1】:
我找到了这个解决方案:
m_pBatteryStateImage是图像,在 Xaml 中定义。
图片的 URI 可以在自动生成的文件PROJECTNAMEGenerated.rc2中找到
void MainPage::SetBatteryState(BatteryStateFlags batteryState)
{
BSTR src = GetImageSourceUri(batteryState);
SetImage(src);
}
void MainPage::SetImage(BSTR src)
{
IXRApplication* application;
App::GetApplication(&application);
//Check which uri is currently used:
BSTR originalSrc;
IXRImageSource* iSource;
m_pBatteryStateImage->GetSource(&iSource);
IXRBitmapImagePtr bmpSrc = (IXRBitmapImagePtr)iSource;
bmpSrc->GetUriSource(&originalSrc);
//Set new image if source uri is different
if (wcscmp(originalSrc,src)!=0)
{
IXRBitmapImagePtr bitmapImage;
application->CreateObject(IID_IXRBitmapImage, &bitmapImage);
bitmapImage->SetUriSource(src);
m_pBatteryStateImage->SetSource(bitmapImage);
}
}
BSTR MainPage::GetImageSourceUri(BatteryStateFlags batteryState)
{
BSTR src;
//see PROJECTNAMEGenerated.rc2 - the numbers will change if images are added (they are alphabetically sorted).
//TODO make it robust against changes
if(batteryState & BatteryChargerError)
src = TEXT("#105");
else if(batteryState & BatteryHigh)
src = TEXT("#106");
else if(batteryState & BatteryLow)
src = TEXT("#109");
else
//Show error if nothing else matches (Should not happen)
src = TEXT("#105");
return src;
}