public static extern IntPtr CreateDIBSection(
IntPtr hdc,
[In] ref NativeMethods.BitmapInfo pbmi,
uint iUsage,
out IntPtr ppvBits,
IntPtr hSection,
uint dwOffset);
/// <summary>
/// 幅と高さを指定してデバイス独立ビットマップを作成します。
/// </summary>
/// <param name="width"></param>
/// <param name="height"></param>
public DIBitmap(int width, int height)
{
this.IsDisposed = false;
this.Width = width;
this.Height = height;
var hScreenDC = NativeMethods.CreateCompatibleDC(IntPtr.Zero);
this.DeviceContext = NativeMethods.CreateCompatibleDC(hScreenDC);
var bi = new NativeMethods.BitmapInfo();
bi.bmiHeader.biSize = (uint)Marshal.SizeOf(bi);
bi.bmiHeader.biBitCount = 32;
bi.bmiHeader.biPlanes = 1;
bi.bmiHeader.biWidth = width;
bi.bmiHeader.biHeight = -height;
IntPtr biBits;
this.Handle = NativeMethods.CreateDIBSection(
this.DeviceContext,
ref bi,
NativeMethods.DIB_RGB_COLORS,
out biBits,
IntPtr.Zero,
0);
this.Bits = biBits;
}
public DIBitmap(int width, int height)
{
this.IsDisposed = false;
this.Width = width;
this.Height = height;
var hScreenDC = NativeMethods.CreateCompatibleDC(IntPtr.Zero);
this.DeviceContext = NativeMethods.CreateCompatibleDC(hScreenDC);
var bi = new NativeMethods.BitmapInfo();
bi.bmiHeader.biSize = (uint)Marshal.SizeOf(bi);
bi.bmiHeader.biBitCount = 32;
bi.bmiHeader.biPlanes = 1;
bi.bmiHeader.biWidth = width;
bi.bmiHeader.biHeight = -height;
IntPtr biBits;
this.Handle = NativeMethods.CreateDIBSection(
this.DeviceContext,
ref bi,
NativeMethods.DIB_RGB_COLORS,
out biBits,
IntPtr.Zero,
0);
this.Bits = biBits;
}
public DIBitmap(int width, int height)
{
this.IsDisposed = false;
this.Width = width;
this.Height = height;
this.DeviceContext = NativeMethods.CreateCompatibleDC(NativeMethods.CreateCompatibleDC(IntPtr.Zero));
NativeMethods.BitmapInfo pbmi = new NativeMethods.BitmapInfo();
pbmi.bmiHeader.biSize = (uint)Marshal.SizeOf((object)pbmi);
pbmi.bmiHeader.biBitCount = (ushort)32;
pbmi.bmiHeader.biPlanes = (ushort)1;
pbmi.bmiHeader.biWidth = width;
pbmi.bmiHeader.biHeight = -height;
IntPtr ppvBits;
this.Handle = NativeMethods.CreateDIBSection(this.DeviceContext, ref pbmi, 0U, out ppvBits, IntPtr.Zero, 0U);
this.Bits = ppvBits;
}
