powerbuilder函数:在PowerBuilder中调用ChooseColor函数

首先创建个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

定义例子变量:
Private:

os_ChooseColor istr_ChooseColor
long il_CustomInitColors[16]
blob{64} ibl_CustomColors

定义外部::

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 .gif' /> to a blob variable blobedit(ibl_customcolors,1,il_custominitcolors)

// let the structure element po to the blob .gif' />
istr_choosecolor.lpcustcolors = ibl_customcolors

// the size
istr_choosecolor.lStructSize = 36

// no owner
SetNull(istr_choosecolor.hwndOwner)

// flag
istr_choosecolor.flags = 1

创建对象: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
lb_ok 
Tags:  matlab函数调用 函数调用 choosecolor powerbuilder函数

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