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Ты когда нибудь писал компоненты на WinAPI? Суть такова: Для ООП Единственная большая сложность, это функция обратного вызова обработчика сообшений. Его надо делать static. Чтобы различать какой все таки экземпляр класса соответствует данному окну, нужно в поле cbWndExtra сохранять this экземпляра. Код очень сырой. Код шаблон для виндовс компонент. При желании его можно доработать. BaseCompon.h| Код |
#ifndef BASEKOMPONENT_H
#define BASEKOMPONENT_H
#include <windows.h>
class BaseCompon
{
public:
BaseCompon(HINSTANCE hInst, char *Name, HWND Parent, RECT rect);
~BaseCompon(void);
bool RunWindow(DWORD st, int nCmdShow);
void GetName(char *ch, int len);
void SetName(char *ch);
void GetSize(POINT *point);
void SetSize(POINT point);
void GetPlace(POINT *point);
void SetPlace(POINT *point);
void SetBGColor(COLORREF col);
HCURSOR GetCursorP(void);
HCURSOR SetCursorP(HCURSOR Cursor);
HWND GetHWND(void);
protected:
virtual LRESULT WProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam);
virtual void OnDestroy(void);
virtual bool OnCreate(CREATESTRUCT FAR* lpCreateStruct);
virtual void OnPaint(HDC dc);
virtual bool OnEraseBkgnd(HDC hdc);
virtual void OnSize(int fwSizeType, int nWidth, int nHeight);
virtual void OnMove(int xPos, int yPos);
//virtual void SetDefaultPlacement(void);
static char NameClass[];
HWND hWindow;
HINSTANCE hIns;
HWND hParent;
HCURSOR hCursor;
RECT WRect;
DWORD Style;
static BaseCompon *TempB;
HWND statwnd;
private:
static LRESULT CALLBACK WndProc(HWND hwnd, UINT Message,
WPARAM wParam, LPARAM lParam);
static BaseCompon *GetData(const HWND hwnd);
void SetData(const HWND hwnd);
ATOM RegClass(void);
void Destroy(void);
bool Create(HWND hwnd, CREATESTRUCT FAR* lpCreateStruct);
void Paint(void);
void WMSize(int fwSizeType, int nWidth, int nHeight);
void WMMove(int xPos, int yPos);
COLORREF RGBBkGnd;
HBRUSH brBkGnd;
char Name[255];
static ATOM atom;
};
#endif //BASEKOMPONENT_H
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BaseCompon.cpp| Код |
#include "BaseKomponent.h"
// ------ BaseCompon ------------------------------------------------
char BaseCompon::NameClass[]="BaseClass";
ATOM BaseCompon::atom=0;
BaseCompon *BaseCompon::TempB=NULL;
BaseCompon *BaseCompon::GetData(const HWND hwnd)
{
return (BaseCompon *) GetWindowLong(hwnd,GWL_USERDATA);
}
void BaseCompon::SetData(const HWND hwnd)
{
SetWindowLong(hwnd, GWL_USERDATA, (LONG) this);
}
LRESULT CALLBACK BaseCompon::WndProc(HWND hwnd, UINT Message,
WPARAM wParam, LPARAM lParam)
{
BaseCompon *temp=GetData(hwnd);
if (temp !=NULL) return temp->WProc(hwnd,Message,wParam,lParam);
else if (TempB !=NULL) return TempB->WProc(hwnd,Message,wParam,lParam);
return 0;
}
ATOM BaseCompon::RegClass(void)
{
if (atom == 0)
{
WNDCLASS wc;
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC) WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = sizeof(BaseCompon *);
wc.hInstance = hIns;
wc.hIcon = 0;
wc.hCursor = hCursor;
wc.hbrBackground = 0;
wc.lpszMenuName = NULL;
wc.lpszClassName = NameClass;
atom= RegisterClass(&wc);
}
return atom;
}
LRESULT BaseCompon::WProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
RECT r;
int wNotifyCode;
int wID;
HWND hwndCtl;
switch (Message)
{
case WM_DESTROY:
OnDestroy();
break;
case WM_CREATE:
return Create(hwnd, (LPCREATESTRUCT) lParam);
break;
case WM_PAINT:
Paint();
break;
case WM_ERASEBKGND:
return OnEraseBkgnd((HDC) wParam);
break;
case WM_SIZE:
WMSize(wParam, (int) LOWORD(lParam), (int) HIWORD(lParam));
break;
case WM_MOVE:
WMMove((int) LOWORD(lParam), (int) HIWORD(lParam));
break;
case WM_COMMAND:
wNotifyCode = HIWORD(wParam); // notification code
wID = LOWORD(wParam); // item, control, or accelerator identifier
hwndCtl = (HWND) lParam; // handle of control
if ((statwnd == hwndCtl) && (wNotifyCode == BN_CLICKED)) SendMessage(hWindow, WM_CLOSE,0,0);//PostQuitMessage(0);
break;
case WM_CLOSE:
DestroyWindow(hWindow);
return 1;
break;
case WM_CTLCOLORBTN:
SetRectEmpty(&r);
GetClientRect((HWND)lParam, &r);
FillRect((HDC) wParam ,&r,brBkGnd);
SetBkColor((HDC) wParam,RGBBkGnd);
SelectObject((HDC) wParam,brBkGnd);
return (LONG) brBkGnd;//(LONG) SelectObject((HDC) wParam,brBkGnd);
break;
default:
return DefWindowProc(hwnd, Message, wParam, lParam);
}
return 0;
}
void BaseCompon::Destroy(void)
{
if (brBkGnd != NULL) DeleteObject(brBkGnd);
OnDestroy();
hWindow=NULL;
if (hParent == NULL) PostQuitMessage(0);
}
bool BaseCompon::Create(HWND hwnd, CREATESTRUCT FAR* lpCreateStruct)
{
SetData(hwnd);
hWindow=hwnd;
bool res=OnCreate(lpCreateStruct);
if (!res)
{
brBkGnd=CreateSolidBrush(RGBBkGnd);
}
return res;
}
void BaseCompon::OnDestroy(void)
{
MessageBox(hWindow,"Mey","Prob", MB_YESNO );
}
bool BaseCompon::OnCreate(CREATESTRUCT FAR* lpCreateStruct)
{
statwnd=CreateWindow("BUTTON", "My static", WS_CHILD | WS_VISIBLE ,
30,20,300,16,hWindow, 0, hIns, NULL);
//SetClassLong(statwnd,GCL_HBRBACKGROUND, (LONG) brBkGnd);
return false;
}
void BaseCompon::Paint(void)
{
PAINTSTRUCT PaintStruct;
HDC dc = BeginPaint(hWindow,&PaintStruct);
OnPaint(dc);
EndPaint(hWindow, &PaintStruct);
}
void BaseCompon::OnPaint(HDC dc)
{
}
bool BaseCompon::OnEraseBkgnd(HDC hdc)
{
RECT r;
SetRectEmpty(&r);
GetClientRect(hWindow, &r);
FillRect(hdc,&r,brBkGnd);
return true;
}
void BaseCompon::WMSize(int fwSizeType, int nWidth, int nHeight)
{
WRect.right=nWidth;
WRect.bottom=nHeight;
OnSize(fwSizeType, nWidth, nHeight);
}
void BaseCompon::OnSize(int fwSizeType, int nWidth, int nHeight)
{
}
void BaseCompon::WMMove(int xPos, int yPos)
{
WRect.left=xPos;
WRect.top=yPos;
OnMove(xPos, yPos);
}
void BaseCompon::OnMove(int xPos, int yPos)
{
}
void BaseCompon::GetName(char *ch, int len)
{
if (ch != NULL)
{
int i=0;
while ((i<(len-1)) && (Name[i] !=0)) ch[i++]=Name[i];
ch[i]=0;
}
}
void BaseCompon::SetName(char *ch)
{
if (ch != NULL)
{
int i=0;
while ((i<253) && (ch[i] !=0)) Name[i++]=ch[i];
Name[i]=0;
}
}
void BaseCompon::GetSize(POINT *point)
{
if (point != NULL)
{
point->x=WRect.right;
point->y=WRect.bottom;
}
}
void BaseCompon::SetSize(POINT point)
{
WRect.right=point.x;
WRect.bottom=point.y;
SetWindowPos(hWindow,NULL,0,0,WRect.right,WRect.bottom, SWP_NOMOVE | SWP_NOZORDER);
}
void BaseCompon::GetPlace(POINT *point)
{
if (point != NULL)
{
point->x=WRect.left;
point->y=WRect.top;
}
}
void BaseCompon::SetPlace(POINT *point)
{
WRect.left=point->x;
WRect.top=point->y;
SetWindowPos(hWindow,NULL,WRect.left,WRect.top,0,0, SWP_NOSIZE | SWP_NOZORDER);
}
HWND BaseCompon::GetHWND(void)
{
return hWindow;
}
HCURSOR BaseCompon::GetCursorP(void)
{
return hCursor;
}
HCURSOR BaseCompon::SetCursorP(HCURSOR Cursor)
{
HCURSOR res=hCursor;
hCursor=Cursor;
SetClassLong(hWindow, GCL_HCURSOR, (LONG) hCursor);
return res;
}
BaseCompon::BaseCompon(HINSTANCE hInst, char *Name, HWND Parent, RECT rect)
{
hCursor=LoadCursor(NULL, IDC_ARROW);
hParent=Parent;
SetName(Name);
hIns=hInst;
WRect.bottom=rect.bottom;
WRect.left=rect.left;
WRect.right=rect.right;
WRect.top=rect.top;
RegClass();
brBkGnd=NULL;
SetBGColor(RGB(192,192,254));
hWindow =NULL;
Style=0;
}
BaseCompon::~BaseCompon(void)
{
if (hWindow !=NULL) SendMessage(hWindow,WM_CLOSE, 0, 0);
}
bool BaseCompon::RunWindow(DWORD St, int nCmdShow)
{
if (hWindow !=NULL) SendMessage(hWindow,WM_CLOSE, 0, 0);
Style=St;
TempB=this;
hWindow=CreateWindow(NameClass, Name, Style,
WRect.left, WRect.top,
WRect.right, WRect.bottom,
hParent, NULL,hIns, NULL);
TempB=NULL;
int err=GetLastError();
if (hWindow != NULL)
{
ShowWindow(hWindow, nCmdShow);
UpdateWindow(hWindow);
}
return (hWindow !=NULL);
}
void BaseCompon::SetBGColor(COLORREF col)
{
RGBBkGnd=col;
if (brBkGnd != NULL) DeleteObject(brBkGnd);
brBkGnd=CreateSolidBrush(RGBBkGnd);
UpdateWindow(hWindow);
}
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