//win32-0. CPP: defines the entry point of application, 
//

# include "stdafx. H" 
# include & lt; Windows. H> 

LRESULT a CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM); 
LRESULT a CALLBACK scrollpro (HWND, UINT, WPARAM, LPARAM); 
Int idfocus; 
WNDPROC oldscoll [3]. 
Static int color [3], cychar; 



Int WINAPI WinMain (HINSTANCE HINSTANCE, 
HINSTANCE hPrevInstance, 
PSTR szCmdLine, 
Int iCmdShow) 
{


The static TCHAR szAppName []=TEXT (" HelloWin "); 
The HWND HWND;//window handle 
MSG MSG.//message structure 
WNDCLASS WNDCLASS;//window class structure 

Wndclass. Style=CS_HREDRAW | CS_VREDRAW; 
Wndclass. LpfnWndProc=WndProc; 
Wndclass. CbClsExtra=0; 
Wndclass. CbWndExtra=0; 
Wndclass. HInstance=hInstance; 
Wndclass. HIcon=LoadIcon (NULL, IDI_APPLICATION);//load the icon for the use of program 
Wndclass. HCursor=LoadCursor (NULL, IDC_ARROW);//load the mouse pointer for the use of program 
Wndclass. HbrBackground=(HBRUSH) GetStockObject (WHITE_BRUSH);//get a graphics object, in this case, is to obtain a brush for painting the background of the window 
Wndclass. LpszMenuName=NULL; 
Wndclass. LpszClassName=szAppName; 

if (! RegisterClass (& amp; Wndclass))//as a registered window class program window 
{
MessageBox (NULL, TEXT (" This program requires Windows NT!" ), 
SzAppName, MB_ICONERROR); 
Return 0; 
} 
//in accordance with the window class to create a window 
HWND=CreateWindow (szAppName,//the window class name 
The TEXT (" The Hello Program "),//window caption 
WS_OVERLAPPEDWINDOW,//the window style 
CW_USEDEFAULT,//initial position x 
CW_USEDEFAULT,//initial position y 
CW_USEDEFAULT,//initial size x 
CW_USEDEFAULT,//initial y size 
NULL,//the parent window handle 
Window menu handle NULL,//
HInstance,//program instance handle 
NULL);//creation parameters 

ShowWindow (HWND, iCmdShow);//on the screen window 
UpdateWindow (HWND);//instructions window updates its 

While (GetMessage (& amp; MSG, NULL, 0, 0))//get messages from the message queue 
{
TranslateMessage (& amp; MSG);//convert some keyboard message 
DispatchMessage (& amp; MSG);//the message is sent to the window procedure 
} 
Return MSG. WParam; 
} 

LRESULT a CALLBACK WndProc (HWND HWND, UINT message, WPARAM WPARAM, LPARAM LPARAM) 
{
HDC HDC. 
PAINTSTRUCT ps; 
The RECT the RECT. 

The static COLORREF crprim [3]={RGB (0, 255), RGB (0255, 0), RGB (0,0,255)}; 
The static HBRUSH HBRUSH [3], hbrushstatic; 
Hwndlabel static HWND hwndscroll [3], [3], hwndvalue [3], hwndrect; 

The static the RECT rccolor; 
The static TCHAR * szcolorlabel []={TEXT (" RED "), TEXT (" GREEN "), TEXT (" BLUE ")};//text - & gt; Reason for unicode unable to initialize the char array pointer 
HINSTANCE HINSTANCE,//a pointer to the instance 
Int I, cxclient cyclient; 
TCHAR szbuffer [10].//wide character buffer to temporary color value 

The switch (the message) 
{

Case WM_CREATE message handler: 
Hinstance=(hinstance) GetWindowLong (HWND, GWL_HINSTANCE); 
Hwndrect=CreateWindow (TEXT (" static "), NULL, 
WS_CHILD | WS_VISIBLE | SS_WHITERECT, 
0,0,0,0, HWND, (HMENU) 9, hinstance, NULL); 
for(i=0; i<3; I++) 
{
Hwndscroll [I]=CreateWindow (TEXT (" scrollbar "), NULL, 
WS_CHILD | WS_VISIBLE | WS_TABSTOP | SBS_VERT, 0,0,0,0, 
HWND, (HMENU) I, hinstance, NULL); 
SB_CTL SetScrollRange (hwndscroll [I], 0255, false); 
SB_CTL SetScrollPos (hwndscroll [I], 0, false); 

Hwndlabel [I]=CreateWindow (TEXT (" static "), szcolorlabel [I], 
WS_VISIBLE | WS_CHILD | SS_CENTER, 0,0,0,0, 
The HWND, (HMENU) (I + 3), hinstance, NULL); 
Oldscoll [I]=(WNDPROC) SetWindowLong (hwndscroll [I], GWL_WNDPROC, (LONG) scrollpro); 
//to find the scroll bar window function pointer! ~ ~ ~ ~ ~ ~ ~ ~ ~ ~!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 

} 
Hbrushstatic=CreateSolidBrush (GetSysColor (COLOR_BTNHIGHLIGHT)); 
Hbrush [I]=CreateSolidBrush (crprim [I]); 
Cychar=HIWORD (GetDialogBaseUnits ()); 
return 0; 
Case WM_SIZE: 
Cxclient=LOWORD (lParam); 
Cyclient=HIWORD (lParam); 
SetRect (& amp; Rccolor cxclient/2, 0, cxclient, cyclient); 
MoveWindow (hwndrect, 0, 0, cxclient/2, cyclient, true); 
for(i=0; i<3; I++) 
{
MoveWindow (hwndscroll [I], 
I + 1) (2 * * cxclient/14, 2 * cychar, 
Cxclient/14, cyclient - 4, true); 
MoveWindow (hwndlabel [I], 
(4 * I + 1) * cxclient/28, cychar/2, 
Cxclient/7, cychar, true); 
MoveWindow (hwndvalue [I], 
(4 * I + 1) * cxclient/28, 
Cyclient cychar/2-3 *, 
Cxclient/7, cychar, true); 
} 
SetFocus (HWND); 
return 0; 
/* case WM_SETFOCUS: 
SetFocus (hwndscroll [idfocus]); 
return 0; */
Case WM_VSCROLL: 
I=GetWindowLong (lParam (HWND), GWL_ID);//the child window ID 
The switch (LOWORD (lParam)) 
{
Case SB_PAGEDOWN: 
Color [I] +=15; 
break; 
Case SB_LINEDOWN: 
Color [I] +=1; 
break; 
Case SB_PAGEUP: 
Color - [I]=15; 
break; 
Case SB_LINEUP: 
Color - [I]=1; 
break; 
Case SB_TOP: 
Color [I]=0; 
break; 
Case SB_BOTTOM: 
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