CSliderCtrl::SetThumbLength
Sets the length of the slider in the current trackbar control.
void SetThumbLength(
int nLength
);
Parameters
Parameter |
Description |
|---|---|
[in] nLength |
Length of the slider, in pixels. |
Remarks
This method requires that the trackbar control be set to TBS_FIXEDLENGTH style.
This method sends the TBM_SETTHUMBLENGTH message, which is described in the Windows SDK.
Requirements
Header: afxcmn.h
Example
The following code example defines the variable, m_sliderCtrl, that is used to access the current trackbar control. The example also defines a variable, thumbLength, that is used to store the default length of the trackbar control's thumb component. These variables are used in the next example.
// Variable to access the slider control.
CSliderCtrl m_sliderCtrl;
// Lenght of the slider control's thumb.
int thumbLength;
The following code example sets the trackbar control's thumb component to twice its default length.
// Add extra initialization.
// Modify the size of the slider control's thumb.
// First, set the TBS_FIXEDLENGTH style.
m_sliderCtrl.ModifyStyle( 0, TBS_FIXEDLENGTH );
thumbLength = m_sliderCtrl.GetThumbLength();
m_sliderCtrl.SetThumbLength( thumbLength * 2 );
// End extra initialization.