发送消息-点击按钮

2025-04-24 21:59:19

1、正确： SendMessage(HWND, WM_LBUTTONDOWN, 0, 0); //鼠标左键按下 Sleep(10); SendMessage(HWND, WM_LBUTTONUP, 0, 0); //鼠标左键放开错误 PostMessage(HWND, WM_LBUTTONDOWN, 0, 0); Sleep(10); PostMessage(HWND, WM_LBUTTONUP, 0, 0);

2、按键按下和弹起必须用SendMessage推荐使用此消息 SendMessage(HWND, BM_CLICK, 0, 0); //模拟单击某按钮 BM即button message另一种点击按钮的方法 SendMessage(HWND_Button, WM_KEYDOWN, VK_SPACE, 0); //按下空格相当于点击按钮 Sleep(10); SendMessage(HWND_Button, WM_KEYUP, VK_SPACE, 0); //放开空格相当于点击按钮

3、SendMessage(HWND_Button, WM_SETFOCUS巳呀屋饔, 0, 0); //给按钮设置一下焦点SendMessage(TreeView.Handle,TVM_SETBK潮贾篡绐COLOR,0,RGB(255,0,0));　设置TV背景颜色SendMessage(Button.Handle,WM_LBUTTONDOWN,0,0);　　鼠标左键按下SendMessage(Button.Handle,WM_LBUTTONUP,0,0);　　　鼠标左键抬起SendMessage(Edit.Handle,WM_SETTEXT,255,Integer(PChar('abc')));　传递文本SendMessage(Edit.Handle,WM_Char,Wparam('Q'),2);　　传递字符SendMessage(Button.Handle,BM_SETSTYLE,BS_RADIOBUTTON,1);　　改变Button风格SendMessage(ComboBox.Handle,CB_SETDropPEDWIDTH,300,0);　　改变CBDownWidth

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