//---------------------------------------------------------------------------
public void SetImage
(
Bitmap[] images,
Alignment align,
int leftMargin, int topMargin, int rightMargin, int bottomMargin
)
{
if (ComCtlMajorVersion < 0)
{
DLLVERSIONINFO dllVersion = new DLLVERSIONINFO();
dllVersion.cbSize = Marshal.SizeOf(typeof(DLLVERSIONINFO));
GetCommonControlDLLVersion(ref dllVersion);
ComCtlMajorVersion = dllVersion.dwMajorVersion;
}
if (ComCtlMajorVersion >= 6 && FlatStyle == FlatStyle.System)
{
RECT rect = new RECT();
rect.left = leftMargin;
rect.top = topMargin;
rect.right = rightMargin;
rect.bottom = bottomMargin;
BUTTON_IMAGELIST buttonImageList = new BUTTON_IMAGELIST();
buttonImageList.margin = rect;
buttonImageList.uAlign = (int)align;
ImageList = GenerateImageList(images);
buttonImageList.himl = ImageList.Handle;
SendMessage(this.Handle, BCM_SETIMAGELIST, 0, ref buttonImageList);
}
else
{
FlatStyle = FlatStyle.Standard;
if (images.Length > 0)
{
Image = images[0];
}
}
}
public static extern IntPtr SendMessage(HWND hWnd, ButtonMessage Msg, int wParam, ref BUTTON_IMAGELIST imageList);
/// <summary> /// Sends the specified message to a window or windows. The SendMessage function calls the window procedure for the specified window and does not return /// until the window procedure has processed the message. /// </summary> /// <param name="hWnd"> /// A handle to the window whose window procedure will receive the message. If this parameter is HWND_BROADCAST ((HWND)0xffff), the message is sent to /// all top-level windows in the system, including disabled or invisible unowned windows, overlapped windows, and pop-up windows; but the message is not /// sent to child windows. /// </param> /// <param name="Msg">The message to be sent.</param> /// <param name="wParam">Additional message-specific information.</param> /// <param name="imageList">Additional message-specific information.</param> /// <returns>The return value specifies the result of the message processing; it depends on the message sent.</returns> public static IntPtr SendMessage(HandleRef hWnd, ButtonMessage Msg, int wParam, ref BUTTON_IMAGELIST imageList) => User32_Gdi.SendMessage(hWnd, Msg, wParam, ref imageList);
private static extern int SendMessage(IntPtr hWnd, int msg, int wParam, ref BUTTON_IMAGELIST lParam);
/// <summary>
/// Sets the images of the button to the specified value with the specified alignment and margins.
/// </summary>
/// <param name="images">The images for the button.</param>
/// <param name="align">The alignment of the image</param>
/// <param name="leftMargin">The left margin of the image in pixels</param>
/// <param name="topMargin">The top margin of the image in pixels</param>
/// <param name="rightMargin">The right margin of the image in pixels</param>
/// <param name="bottomMargin">The bottom margin of the image in pixels</param>
public void SetImage(Bitmap[] images,
Alignment align, int leftMargin, int topMargin, int rightMargin,
int bottomMargin)
{
if (GenerateDisabledImage)
{
if (images.Length == 1)
{
Bitmap image = images[0];
images = new Bitmap[] { image, image, image, image, image };
}
images[3] = DrawImageDisabled(images[3]);
}
if (ComCtlMajorVersion < 0)
{
DLLVERSIONINFO dllVersion = new DLLVERSIONINFO();
dllVersion.cbSize = Marshal.SizeOf(typeof(DLLVERSIONINFO));
GetCommonControlDLLVersion(ref dllVersion);
ComCtlMajorVersion = dllVersion.dwMajorVersion;
}
if (ComCtlMajorVersion >= 6 && FlatStyle == FlatStyle.System)
{
RECT rect = new RECT();
rect.left = leftMargin;
rect.top = topMargin;
rect.right = rightMargin;
rect.bottom = bottomMargin;
BUTTON_IMAGELIST buttonImageList = new BUTTON_IMAGELIST();
buttonImageList.margin = rect;
buttonImageList.uAlign = (int)align;
ImageList = GenerateImageList(images);
buttonImageList.himl = ImageList.Handle;
SendMessage(this.Handle, BCM_SETIMAGELIST, 0, ref buttonImageList);
}
else
{
FlatStyle = FlatStyle.Standard;
if (images.Length > 0)
{
Image = images[0];
}
switch (align)
{
case Alignment.Bottom:
ImageAlign = ContentAlignment.BottomCenter;
break;
case Alignment.Left:
ImageAlign = ContentAlignment.MiddleLeft;
break;
case Alignment.Right:
ImageAlign = ContentAlignment.MiddleRight;
break;
case Alignment.Top:
ImageAlign = ContentAlignment.TopCenter;
break;
case Alignment.Center:
ImageAlign = ContentAlignment.MiddleCenter;
break;
}
}
}
private static extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, ref BUTTON_IMAGELIST lParam);