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101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
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#include <windows.h>
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#include "ml.h"
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#include "../nu/CGlobalAtom.h"
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#ifndef LONGX86
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#ifdef _WIN64
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#define LONGX86 LONG_PTR
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#else /*_WIN64*/
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#define LONGX86 LONG
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#endif /*_WIN64*/
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#endif // LONGX86
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static CGlobalAtom PROP_FLIKERFIX(L"WAFFIX");
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typedef struct _FFDATA
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{
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WNDPROC oldProc;
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DWORD mode;
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BOOL unicode;
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BOOL forward;
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}FFDATA, *PFFDATA;
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static LRESULT WINAPI FlickerFixWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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PFFDATA pfd;
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pfd = (PFFDATA)GetPropW(hwnd, PROP_FLIKERFIX);
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if (!pfd) return (IsWindowUnicode(hwnd)) ? DefWindowProcW(hwnd, uMsg, wParam, lParam) : DefWindowProcA(hwnd, uMsg, wParam, lParam);
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switch(uMsg)
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{
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case WM_ERASEBKGND:
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if (pfd->forward) break;
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if (FFM_NOERASE & pfd->mode) return 1;
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if (FFM_ERASEINPAINT & pfd->mode) return 0;
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if (FFM_FORCEERASE & pfd->mode)
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{
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HBRUSH hb;
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RECT rc;
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hb = CreateSolidBrush(pfd->mode & 0x00FFFFFF);
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GetClientRect(hwnd, &rc);
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FillRect((HDC)wParam, &rc, hb);
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DeleteObject(hb);
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return 1;
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}
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// otherwise unsubclass....
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case WM_NCDESTROY:
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if (FlickerFixWndProc == (WNDPROC)(LONG_PTR)GetWindowLongPtrW(hwnd, GWLP_WNDPROC))
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{
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RemovePropW(hwnd, PROP_FLIKERFIX);
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SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONGX86)(LONG_PTR)pfd->oldProc);
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(pfd->unicode) ? CallWindowProcW(pfd->oldProc, hwnd, uMsg, wParam, lParam) :
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CallWindowProcA(pfd->oldProc, hwnd, uMsg, wParam, lParam);
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free(pfd);
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return 0;
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}
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else pfd->forward = TRUE;
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break;
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}
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return (pfd->unicode) ? CallWindowProcW(pfd->oldProc, hwnd, uMsg, wParam, lParam) :
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CallWindowProcA(pfd->oldProc, hwnd, uMsg, wParam, lParam);
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}
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BOOL FlickerFixWindow(HWND hwnd, INT mode)
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{
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PFFDATA pfd;
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if (!hwnd || !IsWindow(hwnd)) return FALSE;
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pfd = (PFFDATA)GetPropW(hwnd, PROP_FLIKERFIX);
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if (pfd) pfd->mode = mode;
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else
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{
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pfd = (PFFDATA)calloc(1, sizeof(FFDATA));
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if (pfd)
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{
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pfd->forward = FALSE;
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pfd->mode = mode;
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pfd->unicode = IsWindowUnicode(hwnd);
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pfd->oldProc = (WNDPROC)(LONG_PTR) ((pfd->unicode) ? SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONGX86)(LONG_PTR)FlickerFixWndProc) :
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SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONGX86)(LONG_PTR)FlickerFixWndProc));
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if (!pfd->oldProc || !SetPropW(hwnd, PROP_FLIKERFIX, pfd))
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{
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if (pfd->oldProc)
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{
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((pfd->unicode) ? SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONGX86)(LONG_PTR)pfd->oldProc) :
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SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONGX86)(LONG_PTR)pfd->oldProc));
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}
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free(pfd);
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pfd = NULL;
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}
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}
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}
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return (NULL != pfd);
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}
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