SetWindowSubclass 设置窗口子类回调
2021-05-07 03:27
标签：class 事件 windows rtu 背景色 div ble visible not 今天想给一个 Static 控件添加一个鼠标相关的事件：移入，移出，按下，松开事件 一开始以为在 这里捕获，发现不行。搞了半天，也没达到效果。 后来无意发现一个API：SetWindowSubclass 问题解决，SetWindowSubclass () 这么好用的API，我还是刚刚知道，第一次使用。 惭愧惭愧 SetWindowSubclass 设置窗口子类回调 标签：class 事件 windows rtu 背景色 div ble visible not 原文地址：https://www.cnblogs.com/personnel/p/14726133.htmlwhile (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
...
}
LRESULT CALLBACK MySubclassProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
switch (uMsg)
{
case WM_NCDESTROY:
{
RemoveWindowSubclass(hWnd, &MySubclassProc, uIdSubclass);
break;
}
case WM_MOUSELEAVE:
{
//printf("WM_MOUSELEAVE\n");
SendMessage(hwnd_lbl_back, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM) hBitmap_back); //设置图标
break;
}
case WM_MOUSEMOVE:
{
//printf("WM_MOUSEMOVE\n");
//为了捕获 WM_MOUSELEAVE
TRACKMOUSEEVENT tme = {0};
tme.cbSize = sizeof(tme);
tme.hwndTrack = hWnd;
tme.dwFlags = TME_LEAVE;
// tme.dwFlags = TME_LEAVE | TME_HOVER;
// tme.dwHoverTime = 1;
TrackMouseEvent(&tme);
//--------------------------
if(wParam & MK_LBUTTON) //按下
{
SendMessage(hwnd_lbl_back, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM) hBitmap_back_pressed); //设置图标
}
else
{
SendMessage(hwnd_lbl_back, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM) hBitmap_back_over); //设置图标
}
break;
}
case WM_LBUTTONDOWN: //按下
{
//printf("WM_LBUTTONDOWN\n");
SendMessage(hwnd_lbl_back, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM) hBitmap_back_pressed); //设置图标
break;
}
case WM_LBUTTONUP: //松开
{
//printf("WM_LBUTTONUP\n");
SendMessage(hwnd_lbl_back, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM) hBitmap_back_over); //设置图标
break;
}
}
return DefSubclassProc(hWnd, uMsg, wParam, lParam);
}
hwnd_lbl_back = CreateWindowEx(0, "static", "", //
WS_CHILD | WS_VISIBLE | SS_NOTIFY | SS_BITMAP, //SS_GRAYFRAME 使用背景色 | WS_DISABLED
4, // xpos
4, // ypos
28, //width
28, //height
hwnd_frame, (HMENU)id_lbl_back, g_hInstance, NULL) ;
SetWindowSubclass(hwnd_lbl_back, &MySubclassProc, 0, (DWORD_PTR) REF_BACK); //设置窗口子类回调