ChooseColorDlg Method

Opens the system color-selection dialog box.

dhtml语法

rgbColor = Dialog Helper.ChooseColorDlg( [initColor])

Parameters

initColor

Optional. Variant that specifies the RGB value of the initial color selected in the color-selection dialog box. The value is specified as 0xrrggbb where rr is the red hex value, gg is the green hex value, and bb is the blue hex value. For a complete list of colors, see color table.

return value

a variant that specifies the decimal value of the color chosen in the color-selection dialog box. the value must be converted to its hexadecimal equivalent and is specified as 0xrrggbb.

Remarks

There is no way to persist custom colors in this dialog box.

The return value of this method must be converted from decimal to hexadecimal before it can be used to change an object's color. In addition, the hexadecimal number must contain six digits to represent the RRGGBB schema required by the color table. For numbers with less than six numbers, concatenate zeros to the beginning of the number. For more information, see the Color Table.

DHTML代码范例

The following example shows how to call the color dialog box. The return value of the method is converted to a hexadecimal value and applied to the font color.

//This variable needs to have global scope for the callColorDlg function to persist the chosen color
var sInitColor = null;
function callColorDlg(){
//if sInitColor is null, the color dialog box has not yet been called
if (sInitColor == null)
var sColor = dlgHelper.ChooseColorDlg();
else
//call the dialog box and initialize the color to the color previously chosen
var sColor = dlgHelper.ChooseColorDlg(sInitColor);
//change the return value from a decimal value to a hex value and make sure the value has 6
//digits to represent the RRGGBB schema required by the color table
sColor = sColor.toString(16);
if (sColor.length < 6) {
var sTempString = "000000".substring(0,6-sColor.length);
sColor = sTempString.concat(sColor);
}
document.execCommand("ForeColor", false, sColor);
//set the initialization color to the color chosen
sInitColor = sColor;
}

This feature requires Microsoft® Internet Explorer 6.0 or later. Click the following icon to install the latest version. Then reload this page to view the sample.

applies to

	Dialog Helper