Re: Drop down a combobox programatically ?

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You don't need P/Invoke for this. Just set the DroppedDown property to true

/claes

"Nand Kishore Gupta" <NandKishoreGupta@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
message news:9CCF9705-22E4-492D-98BF-E0994EEE1E11@xxxxxxxxxxxxxxxx
You can drop the list portion of a combo box programatically using Windows
SendMessage API. To do so in C#:

// Declare the following in your class

[DllImport("user32.dll")]
public static extern int SendMessage(int hWnd, int msg, int wParam, IntPtr
lParam);
public const int CB_SHOWDROPDOWN = 0x14F;

// In the leave event of combobox, use the following code:

SendMessage(comboBox1.Handle.ToInt32(), CB_SHOWDROPDOWN, 1, IntPtr.Zero);
--
Nand Kishore Gupta


"hung tran" wrote:

Hi,

I'd like to drop down a combobox after validating the Leave() event, how
can I do that ?

Thanks



.

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