c:graphics.h:clearmouseclick
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c:graphics.h:clearmouseclick [2015/05/06 23:06] |
c:graphics.h:clearmouseclick [2024/02/16 01:05] (current) |
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| + | ===== clearmouseclick ===== | ||
| + | |||
| + | |||
| + | ====Syntax of clearmouseclick ==== | ||
| + | <code c> | ||
| + | #include "graphics.h" | ||
| + | void clearmouseclick(int kind); | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== Description of clearmouseclick ==== | ||
| + | <code c> | ||
| + | The clearmouseclick function is available in the winbgim implementation | ||
| + | of BGI graphics. This is just like getmouseclick, except it does not | ||
| + | provide the x and y coordinates of the event. The value of the argument | ||
| + | kind may be any of the constants listed above. After calling | ||
| + | getmouseclick, for a particular kind of event, the ismouseclick will | ||
| + | return false for that kind of event until another such event occurs. | ||
| + | The kind argument to clearmouseclick is one of these constants from the | ||
| + | graphics.h file: | ||
| + | WM_MOUSEMOVE | ||
| + | if you want to detect a mouse movement | ||
| + | WM_LBUTTONDBLCLK | ||
| + | ...detect when the left mouse button is double clicked | ||
| + | WM_LBUTTONDOWN | ||
| + | ...detect when the left mouse button is clicked down | ||
| + | WM_LBUTTONUP | ||
| + | ...detect when the left mouse button is released up | ||
| + | WM_MBUTTONDBLCLK | ||
| + | ...detect when the middle mouse button is double clicked | ||
| + | WM_MBUTTONDOWN | ||
| + | ...detect when the middle mouse button is clicked down | ||
| + | WM_MBUTTONUP | ||
| + | ...detect when the middle mouse button is released up | ||
| + | WM_RBUTTONDBLCLK | ||
| + | ...detect when the right mouse button is double clicked | ||
| + | WM_RBUTTONDOWN | ||
| + | ...detect when the right mouse button is clicked down | ||
| + | WM_RBUTTONUP | ||
| + | ...detect when the right mouse button is released up | ||
| + | The middle mouse button handlers aren't working on my machine. I haven't | ||
| + | yet tracked down the reason--it could be a broken mouse or it could be a | ||
| + | bug in my programming. | ||
| + | See also | ||
| + | ismouseclick | ||
| + | getmouseclick | ||
| + | Example | ||
| + | /* mouse example */ | ||
| + | #include "graphics.h" | ||
| + | |||
| + | void main(void) | ||
| + | { | ||
| + | const int LIMIT = 10; // Number of clicks to stop program. | ||
| + | int maxx, maxy; // Maximum x and y pixel coordinates | ||
| + | int count = 0; // Number of mouse clicks | ||
| + | int divisor; // Divisor for the length of a triangle side | ||
| + | |||
| + | // Put the machine into graphics mode and get the maximum | ||
| + | coordinates: | ||
| + | initwindow(450, 300); | ||
| + | maxx = getmaxx( ); | ||
| + | maxy = getmaxy( ); | ||
| + | |||
| + | // Draw a white circle with red inside and a radius of 50 pixels: | ||
| + | setfillstyle(SOLID_FILL, RED); | ||
| + | setcolor(WHITE); | ||
| + | fillellipse(maxx/2, maxy/2, 50, 50); | ||
| + | |||
| + | // Print a message and wait for a red pixel to be double clicked: | ||
| + | settextstyle(DEFAULT_FONT, HORIZ_DIR, 2); | ||
| + | outtextxy(20, 20, "Left click " << LIMIT << " times to end."); | ||
| + | setcolor(BLUE); | ||
| + | divisor = 2; | ||
| + | while (count < LIMIT) | ||
| + | { | ||
| + | triangle(maxx/divisor, maxy/divisor); | ||
| + | delay(500); | ||
| + | divisor++; | ||
| + | if (ismouseclick(WM_LBUTTONDOWN)) | ||
| + | { | ||
| + | clearmouseclick(WM_LBUTTONDOWN)); | ||
| + | count++; | ||
| + | } | ||
| + | } | ||
| + | |||
| + | // Switch back to text mode: | ||
| + | closegraph( ); | ||
| + | } | ||
| + | |||
| + | |||
| + | |||
| + | |||
| + | ==== Example of clearmouseclick ==== | ||
| + | <code c> | ||
| + | /* mouse example */ | ||
| + | #include "graphics.h" | ||
| + | |||
| + | void main(void) | ||
| + | { | ||
| + | const int LIMIT = 10; // Number of clicks to stop program. | ||
| + | int maxx, maxy; // Maximum x and y pixel coordinates | ||
| + | int count = 0; // Number of mouse clicks | ||
| + | int divisor; // Divisor for the length of a triangle side | ||
| + | |||
| + | // Put the machine into graphics mode and get the maximum | ||
| + | coordinates: | ||
| + | initwindow(450, 300); | ||
| + | maxx = getmaxx( ); | ||
| + | maxy = getmaxy( ); | ||
| + | |||
| + | // Draw a white circle with red inside and a radius of 50 pixels: | ||
| + | setfillstyle(SOLID_FILL, RED); | ||
| + | setcolor(WHITE); | ||
| + | fillellipse(maxx/2, maxy/2, 50, 50); | ||
| + | |||
| + | // Print a message and wait for a red pixel to be double clicked: | ||
| + | settextstyle(DEFAULT_FONT, HORIZ_DIR, 2); | ||
| + | outtextxy(20, 20, "Left click " << LIMIT << " times to end."); | ||
| + | setcolor(BLUE); | ||
| + | divisor = 2; | ||
| + | while (count < LIMIT) | ||
| + | { | ||
| + | triangle(maxx/divisor, maxy/divisor); | ||
| + | delay(500); | ||
| + | divisor++; | ||
| + | if (ismouseclick(WM_LBUTTONDOWN)) | ||
| + | { | ||
| + | clearmouseclick(WM_LBUTTONDOWN)); | ||
| + | count++; | ||
| + | } | ||
| + | } | ||
| + | |||
| + | // Switch back to text mode: | ||
| + | closegraph( ); | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== See also ==== | ||
| + | [[ismouseclick]] | ||
| + | [[getmouseclick]] | ||
| + | |||
| + | |||
| + | ===== output of clearmouseclick example ===== | ||
| + | |||
| + | no output of example at the moment | ||
| + | do not hesitate and add it... | ||
| + | |||
| + | |||
on the occasion of the current invasion of Russia in Ukraine
c/graphics.h/clearmouseclick.txt · Last modified: 2024/02/16 01:05 (external edit)
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