在PowerBuilder中调用ChooseColor函数
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作者:佚名
来源:InterNet 加入时间:2005-1-31 |
首先创建一个Custom user object并定义如下Structure(OS_ChooseColor):
long lstructsize ulong hwndowner ulong hinstance long rgbresult blob lpcustcolors long flags long lcustdata long lpfnhook long lptemplatename
定义实例变量: Private:
os_ChooseColor istr_ChooseColor long il_CustomInitColors[16] blob{64} ibl_CustomColors
定义外部函数::
function boolean ChooseColorA( REF os_ChooseColor lpcc ) library "comdlg32.dll"
在 constructor 事件中写入如下代码::
// initialize choosecolor information // convert the default custom color array to a blob variable blobedit(ibl_customcolors,1,il_custominitcolors)
// let the structure element point to the blob array istr_choosecolor.lpcustcolors = ibl_customcolors
// set the size istr_choosecolor.lStructSize = 36
// no owner SetNull(istr_choosecolor.hwndOwner)
// set flag istr_choosecolor.flags = 1
创建对象函数:boolean of_choosecolor(ref long al_rgbresult) ,代码如下:
boolean lb_ok istr_ChooseColor.rgbresult = al_rgbresult lb_ok = ChooseColorA ( istr_choosecolor ) al_rgbresult = istr_ChooseColor.rgbresult return lb_ok
[文章录入员:nancy] |
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