public static List<ContentControl> GetAllContentControls(Document wordDocument)
{
  if (null == wordDocument)
    throw new ArgumentNullException("wordDocument");

  List<ContentControl> cclist = new List<ContentControl>(); ;
  // Body cc
  var inBodyCc = (from r in wordDocument.ContentControls.Cast<ContentControl>()
          select r);
  cclist.AddRange(inBodyCc);

  // cc within shapes
  foreach (Shape shape in wordDocument.Shapes)
  {
    if (shape.Type == Microsoft.Office.Core.MsoShapeType.msoTextBox)
    {
      cclist.AddRange(WordDocumentHelper.GetContentControlsInRange(shape.TextFrame.TextRange));
    }
  }

  // Get the list of cc in the story ranges : wdFirstPageHeaderStory,wdFirstPageFooterStory,wdTextFrameStory (textBox)... 
  foreach (Range range in wordDocument.StoryRanges)
  {
    cclist.AddRange(WordDocumentHelper.GetContentControlsInRange(range));
  }
  return cclist;
}

public static List<ContentControl> GetContentControlsInRange(Range range)
{
  if (null == range)
    throw new ArgumentNullException("range");

  List<ContentControl> returnValue = new List<ContentControl>();

  foreach (ContentControl cc in range.ContentControls)
  {
    returnValue.Add(cc);
  }

  return returnValue;
}

问候.

Sub GetCCs()
    Dim d As Document
    Set d = ActiveDocument
    Dim cc As ContentControl
    Dim sr As Range
    Dim srs As StoryRanges
    For Each sr In d.StoryRanges
        For Each cc In sr.ContentControls
            ''# do your thing
        Next
    Next
End Sub

我有一个TableViewController,并希望在我的应用程序中显示来自iphone的所有视频文件.

如何获取所有视频文件的列表？

- (void)updateAssetsLibrary
{
loadImgView.hidden = NO;
[spinner startAnimating];
//selectVideoBtn .userInteractionEnabled = NO;

assetItems = [NSMutableArray arrayWithCapacity:0];
ALAssetsLibrary *assetLibrary = AssetsLibrary;

[assetLibrary enumerateGroupsWithTypes:ALAssetsGroupAll usingBlock:^(ALAssetsGroup *group,BOOL *stop) 
{
    if (group)
    {
        [group setAssetsFilter:[ALAssetsFilter allVideos]];
        [group enumerateAssetsUsingBlock:^(ALAsset *asset,NSUInteger index,BOOL *stop)
        {
             if (asset)
             {
                 dic = [[NSMutableDictionary alloc] init];
                 ALAssetRepresentation *defaultRepresentation = [asset defaultRepresentation];
                 Nsstring *uti = [defaultRepresentation UTI];
                 appDelegate.videoURL = [[asset valueForProperty:ALAssetPropertyURLs] valueForKey:uti];

                 mpVideoPlayer = [[MPMoviePlayerController alloc] initWithContentURL:appDelegate.videoURL];

                 Nsstring *title = [Nsstring stringWithFormat:@"%@ %i",NSLocalizedString(@"Video",nil),[assetItems count]+1];

                 [self performSelector:@selector(imageFromVideoURL)];
                 [dic setValue:title forKey:kName];
                 [dic setValue:appDelegate.videoURL forKey:kURL];

                 AssetbrowserItem *item = [[AssetbrowserItem alloc] initWithURL:appDelegate.videoURL title:title];
                 [assetItems addobject:item];
                 [appDelegate.videoURLArray addobject:dic];

                 NSLog(@"Video has info:%@",appDelegate.videoURLArray);
             }
             NSLog(@"Values of dictonary==>%@",dic);

             //NSLog(@"assetItems:%@",assetItems);
             NSLog(@"Videos Are:%@",appDelegate.videoURLArray);
        } ];
    }
    // group == nil signals we are done iterating.
    else 
    {
        dispatch_async(dispatch_get_main_queue(),^{
            //[self updatebrowserItemsAndSignalDelegate:assetItems];
            loadImgView.hidden = NO;
            [spinner stopAnimating];
            [loadImgView removeFromSuperview];
            //selectVideoBtn .userInteractionEnabled = YES;
        });
    }
}
failureBlock:^(NSError *error) 
{
    NSLog(@"error enumerating AssetLibrary groups %@\n",error);
}];
}

- (UIImage *)imageFromVideoURL 
{
// result 
UIImage *image = nil;

// AVAssetimageGenerator
AVAsset *asset = [[AVURLAsset alloc] initWithURL:appDelegate.videoURL options:nil];; 
AVAssetimageGenerator *imageGenerator = [[AVAssetimageGenerator alloc] initWithAsset:asset];
imageGenerator.appliesPreferredTrackTransform = YES;

// calc midpoint time of video
Float64 durationSeconds = CMTimeGetSeconds([asset duration]);
CMTime midpoint = CMTimeMakeWithSeconds(durationSeconds/2.0,600); 

// get the image from 
NSError *error = nil; 
CMTime actualTime;
CGImageRef halfWayImage = [imageGenerator copyCGImageAtTime:midpoint actualTime:&actualTime error:&error];

if (halfWayImage != NULL) 
{
    // cgimage to uiimage
    image = [[UIImage alloc] initWithCGImage:halfWayImage];
    [dic setValue:image forKey:kImage];
    NSLog(@"Values of dictonary==>%@",dic);
    NSLog(@"Videos Are:%@",appDelegate.videoURLArray);
    CGImageRelease(halfWayImage);
}
return image;
}

- (void)AssetsLibraryDidChange:(NSNotification*)changeNotification
{
[self updateAssetsLibrary];
}

- (void)buildAssetsLibrary
{
AssetsLibrary = [[ALAssetsLibrary alloc] init];
ALAssetsLibrary *notificationSender = nil;

Nsstring *minimumSystemVersion = @"4.1";
Nsstring *systemVersion = [[UIDevice currentDevice] systemVersion];
if ([systemVersion compare:minimumSystemVersion options:NSNumericSearch] != NSOrderedAscending)
    notificationSender = AssetsLibrary;

[[NSNotificationCenter defaultCenter] addobserver:self selector:@selector(AssetsLibraryDidChange:) name:ALAssetsLibraryChangednotification object:notificationSender];
[self updateAssetsLibrary];
}

此代码将为您提供iPhone的视频列表.

它可能会帮助你感谢:)

我需要向目标fs和工具链添加包.

目前我只是想添加已有配方的包.

例如,通过添加IMAGE_INSTALL =“boost-dev”和TOOLCHAIN_TARGET_TASK =“boost-dev”,我可以为targetfs和工具链添加提升.

我想做的事

Yocto构建的rootfs非常完整,并且有很多库,但工具链只有最基本的库.

我想将缺少的库添加到工具链中.

题：

如何找到可用库的名称？

像boost-dev一样,我做了很多谷歌搜索,通过添加名称boost-dev到TOOLCHAIN_TARGET_TASK,我可以得到我想要的东西.

但是像OpenGL和OpenCL这样的东西,即使我知道它们是由/ Meta-fsl-arm / recipes-graphics / imx-gpu-viv提供的,我怎么能找到我要添加到TOOLCHAIN_TARGET_TASK的包名？

通过执行bitbake -g <packagename> -u depexp,显示了包之间的依赖关系,Yocto构建中涉及的所有包的名称也是如此.

例如,devil包依赖于devil-dev,因此在Meta-toolchain％.bbappend中执行TOOLCHAIN_TARGET_TASK =“devil-dev”会将恶魔添加到工具链中.

以这种方式找到的包名称可能不完整,具体而言,父包中包含的一些子包可能不会在此处显示.

发生这种情况时,首先找到可能包含子包的父包,然后找到它的.bb文件和.inc文件.

在这些文件中,可能有一个PACKAGES变量,用于说明此包提供的子包.然后可以将这些子包添加到TOOLCHAIN_TARGET_TASK.