Win32 Call System Colors dialog box

Reference website: http://blog.csdn.net/u013242177/article/details/50437358

• First, include the commdlg.h header file, which is the header file for the common dialog, including the file dialog, the color dialog, the Print dialog box, and so on.
• It then declares a variable of type Choosecolor, declaring a variable rgblinecolor of type COLORREF, which is used to store the color selected by the user.

Staticstatic colorref Rgblinecolor;

Where Choosecolor is a struct, including some information about initializing the Color dialog box with the Choosecolor function, you can find the structure from MSDN as follows:

typedef struct {

DWORD lStructSize;

HWND hWndOwner;

HWND hinstance;

COLORREF Rgbresult;

colorref* lpcustcolors;

DWORD Flags;

LPARAM Lcustdata;

Lpcchookproc Lpfnhook;

LPCTSTR Lptemplatename;

} Choosecolor;

• And then assign a value to the contents of the Stchoosecolor.

Stchoosecolor.lstructsize    sizeof(choosecolor); Stchoosecolor.hwndowner      = hWnd; Stchoosecolor.rgbresult      = rgblinecolor; stchoosecolor.lpcustcolors   = (Lpdword) dwcustcolors; stchoosecolor.flags          = cc_rgbinit; stchoosecolor.lcustdata      0 ; Stchoosecolor.lpfnhook        == NULL;

• Finally, use the Choosecolor function to create a color dialog box for the user to select a color

if (Choosecolor (&= stchoosecolor.rgbresult;}

Get the RGB component values in COLORREF:

COLORREF Colorrrefrgb =rgb (+ = = Getbvalue ( COLORRREFRGB);

code example:

#include"commdlg.h"......................................voidCmydialogt::onbnclickedbuttonpickcolor () {//Todo:add your control notification handler code here    StaticChoosecolor Stchoosecolor; StaticCOLORREF Rgblinecolor; StaticCOLORREF dwcustcolors[ -]; Stchoosecolor.lstructsize=sizeof(Choosecolor); Stchoosecolor.hwndowner= This-m_hwnd; Stchoosecolor.rgbresult=Rgblinecolor; Stchoosecolor.lpcustcolors=(Lpdword) dwcustcolors; Stchoosecolor.flags=Cc_rgbinit; Stchoosecolor.lcustdata=0 ; Stchoosecolor.lpfnhook=NULL; Stchoosecolor.lptemplatename=NULL; if(Choosecolor (&Stchoosecolor)) {Rgblinecolor=Stchoosecolor.rgbresult; BYTE R=Getrvalue (Rgblinecolor); BYTE g=Getgvalue (Rgblinecolor); BYTE b=Getbvalue (Rgblinecolor); }}

Operation Result:

Win32 Call System Colors dialog box