![6
LRESULT CALLBACK WndProc(HWND hWnd, UINT mesg, WPARAM wParam, LPARAM lParam)
{
static HWND hBtn;
switch(mesg) {
case WM_CREATE:
hBtn = CreateWindow("BUTTON", "button",
WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON,
0, 0,100,100,hWnd,(HMENU)888,_hInstance, NULL);
break;
case WM_MOUSEMOVE:
HDC hdc;
char szPos[32];
sprintf(szPos, "%03d %03d", LOWORD(lParam),HIWORD(lParam));
hdc = GetDC(hWnd);
TextOut(hdc, 102, 0, szPos, strlen(szPos));
ReleaseDC(hWnd, hdc);
break;
case WM_DESTROY:
PostQuitMessage(0); return FALSE;
}
return DefWindowProc(hWnd, mesg, wParam, lParam);
}
?? ???? ??? ????
?? ????? ????
??? ??? ??](https://image.slidesharecdn.com/12win-180905144045/85/12-6-320.jpg)
![17
LRESULT CALLBACK BtnProc(HWND hWnd, UINT mesg, WPARAM wParam,LPARAM lParam)
{
switch(mesg)
{
case WM_MOUSEMOVE:
HDC hdc;
HWND hParent;
hParent = GetParent(hWnd);
char szPos[32];
sprintf(szPos, "%03d %03d", LOWORD(lParam),HIWORD(lParam));
hdc = GetDC(hParent);
TextOut(hdc, 102, 32, szPos, strlen(szPos));
ReleaseDC(hParent, hdc);
break;
}
return CallWindowProc(_fpOldBtnProc,hWnd,mesg,wParam,lParam);
}
?? ??? ?? ??
???? ?? ???? ???
??? ????? ???](https://image.slidesharecdn.com/12win-180905144045/85/12-17-320.jpg)
12 ?????? ??? ??
- 1. CHAP. 12 ?????? ??? ?? 1
- 2. 2 ??? ????? ???? ?? ??? ??? ?? ??? ???? ?? ?? ?? ??? 11??? ?? Notification ?? ??? ?? ?? ¢ô ????? ??? ?? ?? ¢ô? ??? ??? ??? ???
- 3. 3 ??? ???? ???? ?? ???? ??? ?????? WM_COMMAND ????? ? ???? ????? ?? ?? ? ???, int wNofifyCode = HIWORD(wParam) int wID = LOWORD(wParam); HWND hWndCtrl = (HWND)lParam; WM_COMMAND ???? Notification Code? ?? ???? ?? ?? ?? WM_COMMAND?? ?? ?? WM_COMMAND? ?? ???? WM_XXXX? ??? ? ?? ?? ?? ??, WM_MOUSEMOVE ?? ?
- 4. 4 ?? ??? ??? ??? ? ??? ?? ?? ??? ?? ???? ?? ???? ????? ??? ? ?? ???, ??? ??? ??
- 5. 5 ?? ?? ???, ??? ??? ? ?? ?? ??? ???? ?? ??? WM_MOUSEMOVE ??? ?? ?? int x = LOWORD(lParam) int y = HIWORD(lParam) ?? ?? HDC hdc; hdc = GetDC(hWnd); TextOut(hdc, x, y, "hello", 5); ReleaseDC(hWnd, hdc);
- 6. 6 LRESULT CALLBACK WndProc(HWND hWnd, UINT mesg, WPARAM wParam, LPARAM lParam) { static HWND hBtn; switch(mesg) { case WM_CREATE: hBtn = CreateWindow("BUTTON", "button", WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON, 0, 0,100,100,hWnd,(HMENU)888,_hInstance, NULL); break; case WM_MOUSEMOVE: HDC hdc; char szPos[32]; sprintf(szPos, "%03d %03d", LOWORD(lParam),HIWORD(lParam)); hdc = GetDC(hWnd); TextOut(hdc, 102, 0, szPos, strlen(szPos)); ReleaseDC(hWnd, hdc); break; case WM_DESTROY: PostQuitMessage(0); return FALSE; } return DefWindowProc(hWnd, mesg, wParam, lParam); } ?? ???? ??? ???? ?? ????? ???? ??? ??? ??
- 7. 7 ???? ??, ?? ??? ??? ?? ?? ??? ?? ?? ??? ??????? WM_MOUSEMOVE ?????? ?? ????. ?? ???? ? ?? ??? ?????? ??? ??
- 8. 8 ?? ?????? WM_MOUSEMOVE ??? ?? ?? ???? ???? ??? ???? ?? ??
- 9. 9 ?? ?????? WM_MOUSEMOVE ??? ?? ???? ?? ?? ? ??. ??? ?? ? ?? ?? ???? ??? ??
- 10. 10 ?? ?????? WM_MOUSEMOVE ??? ?? ?? ??? ??? ?? ????? ???? ??? ????? ???? WM_MOUSEMOVE ??? ?? ? ??? ???? (??) ???? ?? ???? ??. ????? ? ?? ???
- 11. 11 ?? ?????? WM_MOUSEMOVE ??? ?? ?? ??? ??? ?? ????? ???? ?? ?? ???? ??? ????? ????
- 12. 12 ??? ???? ??? ??? ?? ¢Ù ??? ???? ?? ¢Ú ?? ???? ???? ?? ?? ?? ??? ??? ??? ??? LRESULT CALLBACK WndProc(HWND hWnd, UINT mesg, WPARAM wParam, LPARAM lParam) { switch(mesg) { case WM_MOUSEMOVE: break; } return DefWindowProc(hWnd, mesg, wParam, lParam); } SetWindowLong() ?? ??? ? ???
- 13. 13 ?? ????? ???? ?? ?? ??? ?? ??? ??, ?? ?? ?? ??? ?? ?? ??? ?? ??? ?? ???? ??? ??, ???? ?? ¢Ù? ??? ? ?? ?? ?? ???? ?? return DefWindowProc(hWnd, mesg, wParam, lParam); LRESULT CALLBACK WndProc(HWND hWnd, UINT mesg, WPARAM wParam, LPARAM lParam) { switch(mesg) { case WM_MOUSEMOVE: break; } return } CallWindowProc( ¡); ?? ?? ??? ???? ?? ????? ??
- 14. 14 ?? ????? ?? ???? GetWindowLong() ?? ??? ?? ?? ??? ?? ???? ?? ??
- 15. 15 ??? ???? ??? ??? ?? ???? ¢Ù ??? ???? ?? ¢Ú ?? ???? ???? ?? - ?? ???? ?? ?? - ??? ????? ?? CallWindowProc() GetWindowLong() SetWindowLong() ? ??? ? ?? ?? ?? ?? ??? ??? ?? ?~?? ???? ???? ??
- 16. 16 #include <windows.h> LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); LRESULT CALLBACK BtnProc(HWND, UINT, WPARAM, LPARAM); HINSTANCE _hInstance; WNDPROC _fpOldBtnProc; LRESULT CALLBACK WndProc(HWND hWnd, UINT mesg, WPARAM wParam, LPARAM lParam) { static HWND hBtn; switch(mesg) { case WM_CREATE: hBtn = CreateWindow(¡); _fpOldBtnProc = (WNDPROC)GetWindowLong(hBtn, GWL_WNDPROC); SetWindowLong(hBtn1, GWL_WNDPROC, (LONG)BtnProc); break; ¡ } ?? ?? ???? ?? ?? ??? ??? ???? ????? Get Window Long ??? ???? ?? ???? ???? ??? ??? WNDPROC ??? ??? ????? ??? ?????????
- 17. 17 LRESULT CALLBACK BtnProc(HWND hWnd, UINT mesg, WPARAM wParam,LPARAM lParam) { switch(mesg) { case WM_MOUSEMOVE: HDC hdc; HWND hParent; hParent = GetParent(hWnd); char szPos[32]; sprintf(szPos, "%03d %03d", LOWORD(lParam),HIWORD(lParam)); hdc = GetDC(hParent); TextOut(hdc, 102, 32, szPos, strlen(szPos)); ReleaseDC(hParent, hdc); break; } return CallWindowProc(_fpOldBtnProc,hWnd,mesg,wParam,lParam); } ?? ??? ?? ?? ???? ?? ???? ??? ??? ????? ???
- 18. 18 LONG GetWindowLong(HWND hWnd, int nIndex); LRESULT CallWindowProc(WNDPROC lpPrevWndFunc, HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam); LONG SetWindowLong(HWND hWnd, int nIndex, LONG dwNewLong); ?? ?? ????? GWL_EXSTYLE ?? ??? ??? GWL_STYLE ??? ??? GWL_WNDPROC ??? ???? ?? GWL_HINSTANCE ???? ?? GWL_HWNDPARENT ?? ??? ?? GWL_ID ??? ??? CreateWindowEx()? ??? ??? nIndex