// 参考 https://qiita.com/DandyMania/items/d1404c313f67576d395f
private IntPtr wndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
{
if (msg == WinApi.WM_DROPFILES)
{
IntPtr hDrop = wParam;
uint num = WinApi.DragQueryFile(hDrop, 0xFFFFFFFF, null, 0);
string[] files = new string[num];
uint bufferSize = 1024;
StringBuilder path = new StringBuilder((int)bufferSize);
for (uint i = 0; i < num; i++)
{
//uint size = WinApi.DragQueryFile(hDrop, i, path, bufferSize);
WinApi.DragQueryFile(hDrop, i, path, bufferSize);
files[i] = path.ToString();
path.Length = 0;
}
WinApi.DragFinish(hDrop);
if (OnFilesDropped != null)
{
OnFilesDropped(files);
}
}
return(WinApi.CallWindowProc(oldWndProcPtr, hWnd, msg, wParam, lParam));
}
