在WINAPI中,我看到一种病毒,只要发生鼠标点击事件,鼠标的x-y就会显示一个图标(红色的一个内部有一个白色的X)。每当我点击鼠标时,如何显示这样的图标?我知道如何用setwindowshookex钩住鼠标点击。是否有像下图所示的iconshow功能。
HHOOK msHOOK;
//getting the icon let's say from a rc file
HICON redIcon;
msHOOK = SetWindowsHookEx(WH_MOUSE_LL, mouseProc, NULL, 0);
LRESULT CALLBACK mouseProc(int nCode, WPARAM wPar, LPARAM lPar){
IconShow(NULL, redIcon, xofMouse, yofMouse, 0);
MessageBox(NULL, "Icon showed", "Cap", 0);
return CallNextHookEx(NULL, nCode, wPar, lPar);
}
while(GetMessage(&msg, NULL, 0, 0) > 0){
TranslateMessage(&msg);
}
谢谢
更新
#include <windows.h>
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdParam, int iCmdShow){
HWND wnd;
MSG msg;
WNDCLASSEX wc;
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW);
wc.lpszMenuName = NULL;
wc.lpszClassName = "ClassName";
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
wnd = CreateWindowEx(WS_EX_TOOLWINDOW | WS_EX_LAYERED, "ClassName", "ss", NULL, CW_USEDEFAULT, CW_USEDEFAULT, 100, 100, NULL, NULL, NULL, NULL);
SetLayeredWindowAttributes(wnd, RGB(255, 255, 0), 20, LWA_COLORKEY);
ShowWindow(wnd, SW_SHOW);
while (GetMessage(&msg, NULL, 0, 0) > 0) {
TranslateMessage(&msg);
}
return 0;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_PAINT:
//stuff here
break;
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
return 0;
}
答案 0 :(得分:2)
您必须创建自己的永远在窗口以显示光标。
它可能需要是layered window,因此您可以使用UpdateLayeredWindow()
和32位RGBA位图来使每个光标看起来都正确。
如果您只使用您所控制的特定光标,并且没有Alpha通道,则可以通过将图像按原样绘制到WM_ERASEBKGND
或{{1消息处理程序,然后使用SetLayeredWindowAttributes(..., LWA_COLORKEY, ...)
设置窗口的透明度颜色。