Renderings

Detailed Description

Built-in rendering functions for the slider widget.

These function may be passed to gwinSetCustomDraw() to get different slider drawing styles.

Note

In your custom slider drawing function you may optionally call these standard functions and then draw your extra details on top.

These custom drawing routines don't have to worry about setting clipping as the framework sets clipping to the object window prior to calling these routines.

Functions
void	gwinSliderDraw_Std (GWidgetObject *gw, void *param)
	The default rendering function for the slider widget. More...
void	gwinSliderDraw_Image (GWidgetObject *gw, void *param)
	The default rendering function. More...

Function Documentation

gwinSliderDraw_Image()

void gwinSliderDraw_Image	(	GWidgetObject *	gw,
		void *	param
	)

The default rendering function.

Parameters

[in]	gw	The widget object (must be a slider object).
[in]	param	A parameter passed in from the user. Must be an image handle. See note below.

Note

The image must be already opened before calling gwinSetCustomDraw(). The image should be 3 times the height of the button. The button image is repeated 3 times vertically, the first (top) for the "up" image, the 2nd for the "down" image, and the third (bottom) image for the disabled state. If the disabled state is never going to be used then the image can be just 2 times the button height. No checking is done to compare the size of the button to the size of the image. No text is drawn on top of the image.

Precondition

GDISP_NEED_IMAGE must be set to GFXON

Function Class: Normal API, this function can be invoked by regular system threads.

gwinSliderDraw_Std()

void gwinSliderDraw_Std	(	GWidgetObject *	gw,
		void *	param
	)

The default rendering function for the slider widget.

Parameters

[in]	gw	The widget object (must be a slider object).
[in]	param	A parameter passed in from the user. Ignored by this function.

Function Class: Normal API, this function can be invoked by regular system threads.

Definition at line 343 of file gwin_slider.c.

References GWidgetObject::g, and GWindowObject::vmt.