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Designer and ViSi Environment

The following are the frequently asked questions regarding Workshop4 IDE Designer and ViSi environment.

Is there a function that converts int to float and vice versa?

There are two functions that can be used for 16-bit conversion.

Converting integer(int_value) to float (float_value):

Float_value := flt_FTOI()

Converting float (float_value) to integer (int_value) :

Int_value := flt_ITOF(float_value)

You can check Diablo16 Internal Functions Manual for more information about the float functions.

How to programmatically retrieve the locations of the widgets on the display?

You can use img_GetWord(handle, index, offset) functions to get the basic widget parameter. The X-position, Y-position, width, and height can be obtained by following offsets: IMAGE_XPOS, IMAGE_YPOS, IMAGE_WIDTH, IMAGE_HEIGHT.


ypos := img_GetWord(hndl, iStatictext1, IMAGE_YPOS);
Is there a way to adjust the brightness of the display?

The brightness is controlled via software using the contrast command which has a range 0 -15. 0 will turn the backlight off completely while 15 is the maximum brightness.

If you are using Designer or ViSi Environment you can use the command

gfx_Contrast(value)   // value is 0 - 15
What can I do with the X mark that I'm getting from the widgets on the display?

When using microSD card widgets, the value will be between 0 to the maximum number of frames. To avoid getting an X mark on the widgets, it will be good to check for the out of range value.


If (widgetvalue < 0) widgetValue = 0
If (widgetvalue > maximum number of frame ) widgetValue = maximum number of frames