经过更多测试后,我发现此问题可能是由于图像未及时加载以被克隆为位图并显示。这可能吗?
注意:是的,标题中还有其他与此错误有关的问题,但从一些研究来看,这似乎是一个含糊不清的错误,有许多可能的原因。我没有发现任何与我的情况相同的问题。
我收到以下错误。
System.ArgumentException was unhandled
HResult=-2147024809
Message=Parameter is not valid.
Source=System.Drawing
它源于此代码。似乎是随机的(即,有时它可以工作,有时它不会。它连续运行的次数越多而不重新启动VS并重建项目,它就越有可能失败):
private Bitmap GetSprite(bool anim, int tsIndex, int tileIdx) {
System.Drawing.Rectangle cloneRect;
string prefix = (anim) ? "A" : "S";
using (Bitmap b = new Bitmap(prefix + tsIndex.ToString() + ".png")) {
if (anim) {
cloneRect = new System.Drawing.Rectangle(BaseObjects.A_AnimSpriteSets[tsIndex].StaticRecs[tileIdx].X, BaseObjects.A_AnimSpriteSets[tsIndex].StaticRecs[tileIdx].Y, BaseObjects.A_AnimSpriteSets[tsIndex].RecWidth, BaseObjects.A_AnimSpriteSets[tsIndex].RecHeight);
} else {
cloneRect = new System.Drawing.Rectangle(BaseObjects.A_StaticSpriteSets[tsIndex].StaticRecs[tileIdx].X, BaseObjects.A_StaticSpriteSets[tsIndex].StaticRecs[tileIdx].Y, BaseObjects.A_StaticSpriteSets[tsIndex].RecWidth, BaseObjects.A_StaticSpriteSets[tsIndex].RecHeight);
}
return b.Clone(cloneRect, b.PixelFormat);
}
}
具体来说,第四行:
using (Bitmap b = new Bitmap(prefix + tsIndex.ToString() + ".png"))
代码的简化目标是根据 spriteset 索引和 sprite 索引返回包含 spriteset 中的 sprite 的位图。此位图显示在 PictureBox 中,直到它更改为不同的图像。我知道逻辑有效。这不是这里的问题。我用来测试的 .png 是 384*256。
所有参数设置正确,所有引用文件都在那里,一切似乎都井井有条。最奇怪的是,有时它有效,有时则无效。这让我相信它System.Drawing
本身可能是内存泄漏,但我似乎无法找到它。
编辑:更新了代码并添加了 StackTrace。尽管在不再使用位图时处理了位图,但仍然存在相同的问题(请参见下面的代码以了解如何处理位图)。
if (Sprite.Image != null) { Sprite.Image.Dispose(); }
Sprite.Image = GetSprite(true, tsIdx, tileIdx);
堆栈跟踪:
System.ArgumentException was unhandled
HResult=-2147024809
Message=Parameter is not valid.
Source=System.Drawing
StackTrace:
at System.Drawing.Bitmap..ctor(String filename)
at CreationTool.Main.GetSprite(Boolean anim, Int32 tsIndex, Int32 tileIdx) in F:\~\~\CreationTool\Main.cs:line 420
at CreationTool.Main.Input_EnemySprite_SelectedIndexChanged(Object sender, EventArgs e) in F:\~\~\CreationTool\Main.cs:line 107
at System.Windows.Forms.ComboBox.OnSelectedIndexChanged(EventArgs e)
at System.Windows.Forms.ComboBox.set_SelectedIndex(Int32 value)
at CreationTool.States.State_Enemy.populateForm() in F:\~\~\CreationTool\States\State_Enemy.cs:line 28
at CreationTool.States.State_Enemy.Load(String name) in F:\~\~\CreationTool\States\State_Enemy.cs:line 22
at CreationTool.Main.btnLoad_Click(Object sender, EventArgs e) in F:\~\~\CreationTool\Main.cs:line 174
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at CreationTool.Program.Main() in F:\~\~\CreationTool\Program.cs:line 15
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()