Slider With Edit & Spin Control - Hanging Problem When Scroll the Slider & Spin

Hi,

I'm using Slider control , Edit box & Spin control. For find the jpg attachment for reference.

I like to display float value in the edit control , Spin control used to change the values in the range of 0.1.

In my application i'm using mscomm control for serial communication.

i send the Edit box value (0.0 to 160.0) to serial port application.

So Hanging problem occurred when i scroll the Slider control & change the edit box value using spin control.

I was used the below event handler,

OnNMCustomdrawSlider1(NMHDR *pNMHDR, LRESULT *pResult);
OnNMReleasedcaptureSlider1(NMHDR *pNMHDR, LRESULT *pResult);
OnNMCustomdrawSlider2(NMHDR *pNMHDR, LRESULT *pResult);
OnNMReleasedcaptureSlider2(NMHDR *pNMHDR, LRESULT *pResult);

OnNMReleasedcaptureSpin1(NMHDR *pNMHDR, LRESULT *pResult);
OnDeltaposSpin2(NMHDR *pNMHDR, LRESULT *pResult);
OnNMReleasedcaptureSpin2(NMHDR *pNMHDR, LRESULT *pResult);
OnDeltaposSpin1(NMHDR *pNMHDR, LRESULT *pResult);

Kindly find the attachment.

Pls clear me.