C# Signature:

/// <summary>Selects an object into the specified device context (DC). The new object replaces the previous object of the same type.</summary>
/// <summary>
/// Selects an object into the specified device context (DC). The new object replaces the previous object of the same type.
/// </summary>
/// <param name="hdc">A handle to the DC.</param>
/// <param name="hgdiobj">A handle to the object to be selected.</param>
/// <param name="hgdiobj">A handle to the object to be selected. The specified object must have been created by using one of the following functions.</param>
/// <returns>
///   <para>If the selected object is not a region and the function succeeds, the return value is a handle to the object being replaced. If the selected object is a region and the function succeeds, the return value is one of the following values.</para>
///   <para>SIMPLEREGION - Region consists of a single rectangle.</para>
///   <para>COMPLEXREGION - Region consists of more than one rectangle.</para>
///   <para>NULLREGION - Region is empty.</para>
///   <para>If an error occurs and the selected object is not a region, the return value is <c>NULL</c>. Otherwise, it is <c>HGDI_ERROR</c>.</para>
///        <para>If the selected object is not a region and the function succeeds, the return value is a handle to the object being replaced.
///        If the selected object is a region and the function succeeds, the return value is one of the values of RegionFlags".</para>
///        <para>If an error occurs and the selected object is not a region, the return value is <see cref="System.IntPtr.Zero"/>. Otherwise, it is HGDI_ERROR.</para>
/// </returns>
/// <remarks>
///   <para>This function returns the previously selected object of the specified type. An application should always replace a new object with the original, default object after it has finished drawing with the new object.</para>
///   <para>An application cannot select a single bitmap into more than one DC at a time.</para>
///   <para>ICM: If the object being selected is a brush or a pen, color management is performed.</para>
/// </remarks>
[DllImport("gdi32.dll", EntryPoint = "SelectObject")]
public static extern IntPtr SelectObject([In] IntPtr hdc, [In] IntPtr hgdiobj);
[DllImport("gdi32.dll", EntryPoint = "SelectObject", SetLastError=true)]
static extern IntPtr SelectObject([In] IntPtr hdc, [In] IntPtr hgdiobj);

VB.NET Signature:

<DllImport("Gdi32.dll")> _
Public Shared Function SelectObject(ByVal hdc As IntPtr, ByVal hObject As IntPtr) As IntPtr
End Function

VB Signature

Public Declare Function SelectObject Lib "gdi32.dll" _
          (ByVal prmlngHDc As Long, _
           ByVal hObject As Long) As Long

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

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Sample Code:

Please see BitBlt

Alternative Managed API:

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