CameraCaptureDialog ShowDialog() 出错

Question

            CameraCaptureDialog cameraCapture = new CameraCaptureDialog();
            
            cameraCapture.Owner = this;
            cameraCapture.InitialDirectory = @"\My Documents";
            cameraCapture.DefaultFileName = @"test.3gp";
            cameraCapture.Title = "Camera Demo";           
            cameraCapture.Mode = CameraCaptureMode.Still;
            
            if (DialogResult.OK == cameraCapture.ShowDialog())
            {
                MessageBox.Show("OK");
            }

提示 An unknown error occurred. 

我一开始怀疑是属性设置的问题，InitialDirectory、DefaultFileName、Owner。。。都设置了也没有用

 查看cameraCapture的各个属性 如果没有设置就会提示“未能计算表达式的值” Owner里面的Contexmenue始终提示“未能计算表达式的值”

 请各位大侠帮忙解决一下，急 如果有DirectShow 能用的例子可以共享一下 

补充：

检查cameraCaptureDialog  发现cameraCaptureDialog.Owner.ContextMenu 这个地方出错 “未能计算表达式的值”mobile6.0 模拟器上调试通过 Mobile5.0不行 真机是6.0的 更不行

Answer 1

你好， 是否是路径设置有问题。你可以参考一下SDK自带的例子，位于Folder: \Common\CS\CECamera。

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施炯

Answer 2

您好 sunshine0576,

  欢迎来到MSDN中文论坛！

  我的建议也是先请检查一下路径设置.

  关于如何使用DirectShow来捕捉视屏我建议您参考一下下面的连接：

   http://www.codeguru.com/cpp/g-m/directx/directshow/article.php/c6973/Simultaneous-Previewing--Video-Capture-using-DirectShow.htm

 新年快乐!

 

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Answer 3

cameraCaptureDialog.Owner.ContextMenu 主要是这个地方 未能计算表达式的值

Answer 4

cameraCaptureDialog.Owner.ContextMenu 主要是这个地方 未能计算表达式的值 mobile6.0 模拟器上调试通过 Mobile5.0不行 真机是6.0的 更不行

Answer 5

cameraCaptureDialog.Owner.ContextMenu 主要是这个地方 未能计算表达式的值 mobile6.0 模拟器上调试通过 Mobile5.0不行 真机是6.0的 更不行