System is win10 want to achieve, using SendMessage sends a mouse click message, makes the left upper corner of the task manager menu as shown in figure,
The following code is invalid, what is the reason?

 
#include  
#include  

Int main () {
HWND win=FindWindowA (NULL, "task manager"); 
SendMessage (win, WM_LBUTTONDOWN MK_LBUTTON, MAKELPARAM (0, 0)); 
SendMessage (win, WM_LBUTTONUP, NULL, MAKELPARAM (0, 0)); 
return 0; 
} 

CodePudding user response:

SendMessage (win, WM_LBUTTONDOWN, 0, 0).
SendMessage (win, WM_LBUTTONUP, 0, 0).
This also tried

CodePudding user response:

As if can't sending WM_LBUTTONDOWN and WM_LBUTTONUP across processes,
Simulation of the mouse to click baidu mouse_event, please

CodePudding user response:

refer to the second floor light bamboo hat reply:

across processes seems to be able to sending WM_LBUTTONDOWN and WM_LBUTTONUP,
Simulation of the mouse to click please baidu mouse_event

SendMessage is software of internal blocked? I use SendMessage to own vs2019 message to use, to the software is not in the other

CodePudding user response:

The

reference mei ah ~ 3 floor response:

SendMessage is software of internal blocked? I use SendMessage to own vs2019 useful message, sent to other software not

Interprocess communication, I study much, however, usage of the two messages you column must be wrong,
WM_LBUTTONDOWN
WM_LBUTTONUP
Wparam and lparam't literally fill a 0