Question

我尝试调试以便找到有问题的bug，但我不能，因为问题似乎被System.Drawing （System.Drawing.Graphics.GetHdc使用的例程更深入）

这是我的类，它位于同一解决方案中的另一个项目中。该类被编译为库（dll），该库由我的示例项目引用，该项目是可执行文件。

namespace CTRGui
{
    public class CTRForm : Form
    {

    }
}

如您所见，该类完全为空，仅从Form继承。下一个代码段是我的示例项目中的入口点。提醒一下，CTRForm是我的示例项目引用的库的一部分。

namespace CTRGuiExample
{
    class Example
    {
        static void Main(string[] Args)
        {
            CTRGui.CTRForm form = new CTRGui.CTRForm();
            Application.Run(form);
        }
    }
}

（可视）调试器显示在Application.Run上抛出异常（正常情况下考虑到它没有PDB /源代码），并且调用堆栈告诉我实际上抛出了System.ArgumentException System.Drawing.Graphics.GetHdc

尽管进行了调试，但是徒劳无功，我无法找到解决此问题的方法。

编辑：根据要求提供异常详细信息。

VS给我的复制的异常细节：

System.ArgumentException occurred
  HResult=-2147024809
  Message=Parameter is not valid.
  Source=System.Drawing
  StackTrace:
       at System.Drawing.Graphics.GetHdc()
  InnerException:

Visual Studio中显示的异常信息：

Exception thrown: 'System.ArgumentException' in System.Drawing.dll

Additional information: Parameter is not valid.

调用堆栈：

    System.Drawing.dll!System.Drawing.Graphics.GetHdc() Unknown
    System.Drawing.dll!System.Drawing.BufferedGraphics.RenderInternal(System.Runtime.InteropServices.HandleRef refTargetDC, System.Drawing.BufferedGraphics buffer) Unknown
    System.Drawing.dll!System.Drawing.BufferedGraphics.Render() Unknown
    System.Windows.Forms.dll!System.Windows.Forms.Control.WmPaint(ref System.Windows.Forms.Message m)   Unknown
    System.Windows.Forms.dll!System.Windows.Forms.Control.WndProc(ref System.Windows.Forms.Message m)   Unknown
    System.Windows.Forms.dll!System.Windows.Forms.ScrollableControl.WndProc(ref System.Windows.Forms.Message m) Unknown
    System.Windows.Forms.dll!System.Windows.Forms.Form.WndProc(ref System.Windows.Forms.Message m)  Unknown
    System.Windows.Forms.dll!System.Windows.Forms.Control.ControlNativeWindow.OnMessage(ref System.Windows.Forms.Message m) Unknown
    System.Windows.Forms.dll!System.Windows.Forms.Control.ControlNativeWindow.WndProc(ref System.Windows.Forms.Message m)   Unknown
    System.Windows.Forms.dll!System.Windows.Forms.NativeWindow.DebuggableCallback(System.IntPtr hWnd, int msg, System.IntPtr wparam, System.IntPtr lparam)  Unknown
    [Native to Managed Transition]  
    [Managed to Native Transition]  
    System.Windows.Forms.dll!System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(System.IntPtr dwComponentID, int reason, int pvLoopData)  Unknown
    System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(int reason, System.Windows.Forms.ApplicationContext context)    Unknown
    System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoop(int reason, System.Windows.Forms.ApplicationContext context) Unknown
    System.Windows.Forms.dll!System.Windows.Forms.Application.Run(System.Windows.Forms.Form mainForm)   Unknown
>   CTRGuiExample.exe!CTRGuiExample.Example.Main(string[] Args) Line 15 C#

尽管空代码

0 个答案: